Cervical Cancer Guideline Esmo
Cervical Cancer Guideline Esmo
   *Correspondence to: ESMO Guidelines Committee, ESMO Head Office, Via L. Taddei 4, CH-6962 Viganello-Lugano, Switzerland. E-mail: clinicalguidelines@esmo.org
   †
    Approved by the ESMO Guidelines Committee: January 2008, last update May 2017. This publication supersedes the previously published version—Ann Oncol 2012;
   23(Suppl 7): vii27–vii32.
   Incidence and epidemiology                                                                            5 more oncogenic HPV viruses (HPV 31, 33, 45, 52 and 58) in
Cervical cancer is the second most commonly diagnosed cancer                                             addition to the types already included in 4vHPV, which cause an
and the third leading cause of cancer death among females in less                                        additional 15% of HPV-related cancers in women and 4% of
developed countries. There were an estimated 527 600 new cer-                                            those in men [4]. Both the 2vHPV and 4vHPV have significant
vical cancer cases and 265 700 deaths worldwide in 2012 [1].                                             cross-protective activity against other oncogenic viruses. All three
Nearly 90% of cervical cancer deaths occurred in developing parts                                        are efficacious against related infection and cervical, vaginal, vul-
of the world. The large geographic variation in cervical cancer                                          var and anal dysplasia [5–7].
rates reflects differences in the availability of screening (which                                          Post-licensure reports from countries with established HPV
allows for the detection and removal of precancerous lesions) and                                        vaccination programs indicate that HPV vaccination has a bene-
in human papillomavirus (HPV) infection prevalence.                                                      ficial effect at the population level as early as 3 years after the
   However, cervical cancer still represents a major public health                                       introduction of an HPV vaccination programme, including de-
problem even in developed countries: more than 58 000 new cases                                          creases in the incidence of high-grade cervical abnormalities, the
of cervical cancer are diagnosed and  24 000 patients die in                                            prevalence of vaccine HPV types and the incidence of genital
Europe every year [2]. Five-year relative survival for European                                          warts [8, 9]. Prophylactic administration of HPV vaccine can ef-
women diagnosed with cervical cancer in 2000–2007 was 62%,                                               fectively prevent infection and disease associated with the vaccine
ranging from 57% in Eastern Europe to 67% in Northern                                                    HPV types. The effect of vaccination on the burden of cancer re-
Europe. Survival was particularly low (< 55%) in Bulgaria, Latvia                                        mains to be determined but, according to surrogate markers, it is
and Poland and highest in Norway (71%) [3]. Survival decreased                                           expected to prevent > 70% of cervical cancers.
with advancing age at diagnosis, from 81% for 15–44-year olds to                                            For many years, the Papanicolaou (Pap) test has been the
34% for women  75 years. Survival increased significantly from                                          standard method for cervical cancer screening, reducing the inci-
61% in 1999–2001 to 65% in 2005–2007. FIGO stage is one of the                                           dence by 60%–90% and the death rate by 90%. However, the
most important prognostic factors.                                                                       limitations of this cytology-based test are the sensitivity ( 50%)
   The most significant cause of cervical cancer is persistent papil-                                    and significant proportion of inadequate specimens. More re-
lomavirus infection. HPV is detected in 99% of cervical tumours,                                         cently, an HPV test has been introduced as a screening tool as
particularly the oncogenic subtypes such as HPV 16 and 18.                                               HPV deoxyribonucleic acid (DNA) is present in almost all cer-
   To date, three HPV vaccines are licensed and available: the bi-                                       vical cancers and it has demonstrated higher sensitivity for high-
valent HPV virus-like particle vaccine (2vHPV), the quadrivalent                                         grade cervical intraepithelial neoplasia (CIN2þ) than that
HPV virus-like particle vaccine (4vHPV) and nine-valent HPV                                              achieved by cytology in several studies. A pooled analysis of four
virus-like particle vaccine (9vHPV). All 3 vaccines provide pro-                                         randomised controlled trials of HPV-based cervical screening
tection against HPV 16 and 18. 4vHPV also includes HPV 6 and                                             versus conventional cytology showed that HPV-based cervical
11 which cause 90% of genital warts. Furthermore, 9vHPV covers                                           screening provides 60%–70% greater protection against invasive
C The Author 2017. Published by Oxford University Press on behalf of the European Society for Medical Oncology.
V
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Annals of Oncology                                                   Clinical Practice Guidelines
cancer compared with cytology-based screening [10]. Findings          Table 1. WHO histological classification of tumours of the uterine cervix
support HPV-based screening with triage at prolonged inter-
                                                                      Epithelial tumours
vals, starting at age 30 years. Especially in a vaccinated popula-
                                                                      1. Squamous tumours and precursors
tion when dysplastic lesions will be less frequent, screening
                                                                         Squamous cell carcinoma, not otherwise specified                8070/3
with Pap tests will be more difficult. Pap cytology has signifi-
                                                                           Keratinising                                                 8071/3
cant limitations. It is based on the subjective interpretation of          Non-keratinising                                             8072/3
morphological alterations present in cervical samples that must            Basaloid                                                     8083/3
be collected with proper attention to sampling cells of the                Verrucous                                                    8051/3
transformation zone. Also, the highly repetitive nature of the             Warty                                                        8051/3
work of screening many smears leads to fatigue, which invari-              Papillary                                                    8052/3
ably causes errors in interpretation.                                      Lymphoepithelioma-like                                       8082/3
   Therefore, primary prevention of cervical cancer is now pos-            Squamotransitional                                           8120/3
sible via immunisation with highly efficacious HPV vaccines [II,         Early invasive (microinvasive) squamous cell carcinoma         8076/3
A] and secondary prevention has gained impetus with the advent           Squamous intraepithelial neoplasia
of sensitive HPV DNA testing to improve traditional Pap cy-                Cervical intraepithelial neoplasia (CIN) 3/                  8077/2
tology screening programmes [II, A].                                           squamous cell carcinoma in situ                          8070/2
                                                                         Benign squamous cell lesions
                                                                           Condyloma acuminatum
                                                                           Squamous papilloma                                           8052/0
 Diagnosis and pathology/molecular biology                                 Fibroepithelial polyp
Abnormal cervical cytology or a positive high-risk HPV test           2. Glandular tumours and precursors
                                                                         Adenocarcinoma                                                 8140/3
should lead to colposcopy and biopsy or excisional procedures
                                                                           Mucinous adenocarcinoma                                      8480/3
such as loop electrosurgical excision and conisation. Early cer-
                                                                               Endocervical                                             8482/3
vical cancer is often asymptomatic, while locally advanced disease
                                                                               Intestinal                                               8144/3
could cause symptoms including abnormal vaginal bleeding (also
                                                                               Signet-ring cell                                         8490/3
after coitus), discharge, pelvic pain and dyspareunia. Gross ap-               Minimal deviation                                        8480/3
pearance is variable. Carcinomas can be exophytic, growing out                 Villoglandular                                           8262/3
of the surface, or endophytic with stromal infiltration with min-          Endometrioid adenocarcinoma                                  8380/3
imal surface growth. Some early cancers are not easily detected            Clear cell adenocarcinoma                                    8310/3
and even deeply invasive tumours may be somewhat deceptive on              Serous adenocarcinoma                                        8441/3
gross examination. If examination is difficult or there is uncer-          Mesonephric adenocarcinoma                                   9110/3
tainty about vaginal/parametrial involvement, examination                Early invasive adenocarcinoma                                  8140/3
should preferably be done under anaesthesia by an interdisciplin-        Adenocarcinoma in situ                                         8140/2
ary team including a gynaecological oncologist and a radiation           Glandular dysplasia
oncologist.                                                              Benign glandular lesions
   The World Health Organization (WHO) recognises three cate-              Müllerian papilloma
gories of epithelial tumours of the cervix: squamous, glandular            Endocervical polyp
(adenocarcinoma) and other epithelial tumours including               3. Other epithelial tumours
adenosquamous carcinoma, neuroendocrine tumours and undif-               Adenosquamous carcinoma                                        8560/3
ferentiated carcinoma (Table 1). Squamous cell carcinomas ac-              Glassy cell carcinoma variant                                8015/3
count for  70%–80% of cervical cancers and adenocarcinomas              Adenoid cystic carcinoma                                       8200/3
for 20%–25%.                                                             Adenoid basal carcinoma                                        8098/3
                                                                         Neuroendocrine tumours
                                                                           Carcinoid                                                    8240/3
Squamous cell carcinoma                                                    Atypical carcinoid                                           8249/3
                                                                           Small cell carcinoma                                         8041/3
Squamous carcinomas are composed of cells that are recognisably
                                                                           Large cell neuroendocrine carcinoma                          8013/3
squamous but vary in either growth pattern or cytological                Undifferentiated carcinoma                                     8020/3
morphology. Originally, they were graded using Broders’ grading
system; subsequently, they were classified into keratinising, non-    Mesenchymal tumours and tumour-like conditions
keratinising and small-cell squamous carcinomas. In the more re-      Mixed epithelial and mesenchymal tumours
cent WHO classification, the term small-cell carcinoma was            Melanocytic tumours
                                                                      Miscellaneous tumours
reserved for tumours of neuroendocrine type. Keratinising squa-
                                                                      Lymphoid and haematopoetic tumours
mous cell carcinomas are characterised by the presence of keratin
                                                                      Secondary tumours
pearls. Mitoses are not frequent. Non-keratinising squamous cell
carcinomas do not form keratin pearls by definition, but may          Morphology code of the International Classification of Diseases for
show individual cell keratinisation. Clear-cell changes can be        Oncology (ICD-O) {921} and the Systematized Nomenclature of
prominent in some tumours and should not be misinterpreted as         Medicine (http://snomed.org).
clear-cell carcinoma.                                                 WHO, World Health Organization.
 T – Primary Tumour
 TX                                                          Primary tumour cannot be assessed
 T0                                                          No evidence of primary tumour
 Tis                                                         Carcinoma in situ (preinvasive carcinoma)
 T1                                     I                    Tumour confined to the cervixa
 T1ab,c                                 IA                   Invasive carcinoma diagnosed only by microscopy. Stromal invasion with a maximal depth of
                                                                5.0 mm measured from the base of the epithelium and a horizontal spread of 7.0 mm or lessd
 T1a1                                   IA1                  Measured stromal invasion 3.0 mm or less in depth and 7.0 mm or less in horizontal spread
 T1a2                                   IA2                  Measured stromal invasion more than 3.0 mm and not more than 5.0 mm with a horizontal
                                                                spread of 7.0 mm or lessd
 T1b                                    IB                   Clinically visible lesion confined to the cervix or microscopic lesion greater than T1a/IA2
 T1b1                                   IB1                  Clinically visible lesion 4.0 cm or less in greatest dimension
 T1b2                                   IB2                  Clinically visible lesion more than 4.0 cm in greatest dimension
 T2                                     II                   Tumour invades beyond uterus but not to pelvic wall or to lower third of vagina
 T2a                                    IIA                  Tumour without parametrial invasion
 T2a1                                   IIA1                 Clinically visible lesion 4.0 cm or less in greatest dimension
 T2a2                                   IIA2                 Clinically visible lesion more than 4.0 cm in greatest dimension
 T2b                                    IIB                  Tumour with parametrial invasion
 T3                                     III                  Tumour involves lower third of vagina, or extends to pelvic wall, or causes hydronephrosis or
                                                                non-functioning kidney
 T3a                                    IIIA                 Tumour involves lower third of vagina
 T3b                                    IIIB                 Tumour extends to pelvic wall, or causes hydronephrosis or non-functioning kidney
 T4                                     IVA                  Tumour invades mucosa of the bladder or rectum, or extends beyond true pelvise
 N – Regional Lymph Nodesf
 NX                                                          Regional lymph nodes cannot be assessed
 N0                                                          No regional lymph node metastasis
 N1                                                          Regional lymph node metastasis
 M – Distant Metastasisf
 M0                                                          No distant metastasis
 M1                                                          Distant metastasis (includes inguinal lymph nodes and intraperitoneal disease). It excludes
                                                               metastasis to vagina, pelvic serosa, and adnexa
  a
    Extension to corpus uteri should be disregarded.
  b
    The depth of invasion should be taken from the base of the epithelium, either surface or glandular, from which it originates. The depth of invasion is
  defined as the measurement of the tumour from the epithelial–stromal junction of the adjacent most superficial papillae to the deepest point of inva-
  sion. Vascular space involvement, venous or lymphatic, does not affect classification.
  c
    All macroscopically visible lesions even with superficial invasion are T1b/IB.
  d
    Vascular space involvement, venous or lymphatic, does not affect classification.
  e
    Bullous oedema is not sufficient to classify a tumour as T4.
  f
    No FIGO equivalent.
  TNM, tumour, node and metastasis.
  Reprinted from [61] with permission from John Wiley & Sons, Inc.
fertility [I, B] [18]. Simple hysterectomy can be offered if the                  invasive approach is gaining increasing relevance and is standard
patient does not wish to preserve fertility. In stage IA1 with LVSI,              in most centres, since it appears to offer similar oncological safety
surgical assessment of pelvic lymph nodes should be discussed                     with favourable surgical morbidity [19].
with the patient, including the sentinel lymph node (SLN, see
below).                                                                              Sentinel lymph node dissection in cervical cancer. SLN dissec-
   In patients with FIGO stage IA2, IB and IIA, radical hysterec-                 tion (SLND) is standard in the treatment of breast cancer as
tomy with bilateral lymph node dissection (with or without SLN)                   well as vulvar cancer and increasing evidence also suggests an
is standard treatment, if the patient does not wish to preserve fer-              important role for SLND in cervical cancer. While the evidence
tility [I, B]. This can be carried out either by laparotomy or lapar-             is still evolving and guideline recommendations are not yet
oscopy (which can be robotically assisted). The minimally                         clearly defined, it should be considered in FIGO stage I
Colposcopy / Biopsy
CIN2 / CIN3 Invasive cervical cancer Locally advanced disease Metastatic disease
FIGO IA1 FIGO IA2 FIGO IB2 + IIA FIGO IB2 / IIB / IIIB FIGO IVA FIGO IVB
                                                                                                                                                                                                                                                                                       Annals of Oncology
                                         Figure 1. Treatment algorithm for cervical cancer.
                                         CIN, cervical intraepithelial neoplasia; CRT, chemoradiotherapy; FIGO, Féderation Internationale de Gynécologie et d’Obstétrique; HPV, human papillomavirus; LVSI, lymphovascular space in-
                                         vasion; PALND, para-aortic lymph node dissection; Pap, Papanicolaou; PET-CT, positron emission tomography/computed tomography; PLND, pelvic lymph node dissection; RT, radiotherapy;
                                         SLN, sentinel lymph node.
Annals of Oncology                                                          Clinical Practice Guidelines
patients with tumours of  4 cm. Some evidence suggests that                  These results indicate that NACT may offer a benefit over sur-
the detection rate is highest if the tumour is < 2 cm. Tracer is            gery alone in cervical cancer patients (borderline LACC, nodes
injected directly into the cervix, and blue dye, technetium                 positive, parametrial invasion at MRI), reducing the need for ad-
radiocolloid or fluorescent indocyanine green is used. SLND                 juvant RT [I, C].
should be done only in centres with enough expertise
and training. Sentinel nodes should be detected on both sides               Chemoradiotherapy in locally advanced cervical cancer. CRT has
[II, B] [20].                                                               been the standard of care for patients with bulky IB2–IVA disease
                                                                            for almost two decades. The near simultaneous publication of five
   Surgical therapy of the uterus. Since radiotherapy (RT) and              randomised trials, three in LACC, collectively demonstrating an
surgery are equally effective in early stages, surgery should only be       improvement in both disease-free survival (DFS) and OS with con-
considered in patients with earlier stages (up to FIGO IIA) with-           comitant chemotherapy and RT over standard RT/hydroxyurea
out risk factors necessitating adjuvant therapy, which results in a         (endorsed by the National Cancer Institute) changed clinical prac-
multimodal therapy without improvement of survival but                      tice worldwide [I, A] [29–33]. However, concerns were raised
increased toxicity [I, A].                                                  about the applicability of the results in view of patient selection,
   It is important to note that the currently established radical hys-      protracted overall treatment time, the lack of a RT-only control
terectomy with extensive parametrial resection most likely consti-          arm and the poor outcome in the control group. An individual pa-
tutes overtreatment in many patients, especially those with small           tient data meta-analysis was undertaken to address these issues
and locally restricted tumours. Large randomised studies such as            [34]. The authors identified 18 randomised trials with an RT-only
the SHAPE study are currently enrolling patients to compare simple          control arm from 11 countries with the subsequent analysis limited
hysterectomy with radical hysterectomy in this population [21].             to 13 trials. The analysis confirmed the benefit of CRT but with a
                                                                            smaller effect. The HR for OS and DFS was 0.81 and 0.78, respect-
Neoadjuvant chemotherapy to surgery. The rationale for the use              ively, which translates into an absolute improvement of 6% and
of neoadjuvant chemotherapy (NACT) includes: (i) reduction of               8% in OS and DFS, respectively. The estimated absolute survival
the primary tumour size, allowing operability; (ii) eradication of          benefit for CRT compared with RT alone was 10% for those with
micrometastatic disease; and (iii) potential increase in tumour             FIGO stage I/II disease, compared with 3% for those with FIGO
vascularisation and reduction of the number of hypoxic cells [22–24].       stage III/IVa. The most commonly used regimen is weekly cisplatin
   In a meta-analysis, NACT followed by radical surgery showed a            40 mg/m2, although the meta-analysis also reported significant
highly significant 35% reduction in the risk of death compared with         benefits with non-platinum agents [I, A] [34].
RT alone [hazard ratio (HR) ¼ 0.65; P ¼ 0.0004], with an absolute              More recently, colleagues in Mexico reported on a large
improvement of 14% in survival at 5 years, increasing from 50% to           randomised phase III trial comparing standard CRT with a more
64% [25]. The analysis included data from 872 patients with LACC            intensive concomitant approach with gemcitabine/cisplatin fol-
enrolled in five different trials. The largest trial included in a second   lowed by an additional two cycles of adjuvant chemotherapy
meta-analysis, enrolled 441 FIGO stage IB2–III cervical cancer pa-          [35]. Yet, despite a reported 9% improvement in progression-
tients and compared platinum-based NACT followed by radical                 free survival (PFS) at 3 years with treatment intensification, this
surgery with conventional RT. The main criticism of this study is           approach has not been widely adopted amid concerns about tox-
related to the suboptimal RT administration; almost 27% of pa-              icity [II, C]. Meanwhile two international trials of additional
tients did not receive intracavitary RT; 11% of patients received less      chemotherapy delivered either before (INTERLACE) or after
than 60 Gy of external pelvic beam radiation total dose at point A          CRT (OUTBACK) are ongoing and will hopefully answer the
and the median total dose delivered was 70 Gy, while the optimal            question as to whether this approach will improve OS further.
treatment is considered to be 80–90 Gy at point A.                             Technical advances in imaging and in RT planning have facili-
   Moreover, in all of these studies, the control arm, RT alone             tated a move towards increased precision in brachytherapy prac-
without concomitant chemotherapy, does not represent the cur-               tice. This approach has been championed by groups in Austria,
rent standard of care for LACC. In addition, the RT total dose              Denmark and France with the dual aim of improving outcome
and the median time of RT administration were sometimes                     through dose escalation while reducing the toxicity to the sur-
suboptimal.                                                                 rounding normal tissues [36]. A recently published multicentre co-
   There are two randomised phase III trials that have explored the         hort study (RetroEMBRACE) demonstrated excellent local control
role of NACT followed by surgery versus chemoradiotherapy (CRT),            rates of 93% and 79% for patients with FIGO stage IIB and IIIB
but the results are not yet available (EORTC Protocol 55994 and             disease, respectively, at 3 years [37]. However, the 5-year actuarial
NCT00193739) [26, 27].                                                      OS was 65% and, while this is better than historical controls, it re-
   Moreover, a recent meta-analysis comparing NACT followed                 mains to be seen whether this truly represents an improvement in
by surgery versus surgery alone confirmed that patients treated             survival over standard CRT with lower RT doses. With a median
with NACT had higher local control [odds ratio (OR) ¼ 0.67;                 follow up of 43 months, the actuarial 5-year G3–G5 morbidity was
95% confidence interval (CI): 0.45–0.99; P ¼ 0.04)] [28].                   5%, 7% and 5% to the bladder, gastrointestinal tract and vagina,
Exploratory analysis of pathological response showed a signifi-             respectively, confirming that the improved local control was
cant decrease in adverse pathological findings with NACT                    achieved with a low risk of morbidity [I, B]. Given the rarity of
(OR ¼ 0.54; P < 0.0001 for lymph node status; OR ¼ 0.58;                    small-cell neuroendocrine carcinoma, there are limited data to
P ¼ 0.002 for parametrial infiltration). However, a significant             guide treatment of this type of cervical cancer. Most clinicians
percentage of patients will not have surgery because of treatment           favour: the use of combined modality therapy (surgery followed by
toxicity or insufficient response.                                          chemotherapy or combined CRT) for limited-stage potentially
  CRT, chemoradiotherapy; CT, computed tomography; DFS, disease-free survival; DNA, deoxyribonucleic acid; FIGO, Féderation Internationale de
  Gynécologie et d’Obstétrique; HPV, human papillomavirus; LVSI, lymphovascular space invasion; NACT, neoadjuvant chemotherapy; OS, overall sur-
  vival; Pap, Papanicolaou; PET/CT, positron emission tomography/computed tomography; PFS, progression-free survival; PLND, pelvic lymph node
  dissection; PS, performance status; RT, radiotherapy; SLN, sentinel lymph node; SLND, sentinel lymph node dissection; TNM, tumour, node and
  metastasis.
FIGO stage IA1                                                                   the presence of negative margins and the absence of clinical
                                                                                 contraindications to surgery, the cone biopsy may represent de-
According to most international guidelines, the first diagnostic
                                                                                 finitive treatment. For patients with LVSI, who have an increased
and curative step for microscopic tumours is conisation [52]. In
 Grades of recommendation
 A     Strong evidence for efficacy with a substantial clinical benefit,          Personalised medicine
          strongly recommended
 B     Strong or moderate evidence for efficacy but with a limited clin-       In this disease setting, more research is needed to identify molecular
          ical benefit, generally recommended                                  markers which could lead to advances in personalised medicine.
 C     Insufficient evidence for efficacy or benefit does not outweigh
          the risk or the disadvantages (adverse events, costs, . . . ).,
          optional                                                              Follow-up, long-term implications and
 D     Moderate evidence against efficacy or for adverse outcome, gen-
          erally not recommended
                                                                                survivorship
 E     Strong evidence against efficacy or for adverse outcome, never          No definitive agreement exists on the best post-treatment surveil-
          recommended                                                         lance of cervical cancer. At a minimum, follow-up visits with a
  a
                                                                              complete physical examination, including a pelvic–rectal exam
      By permission of the Infectious Diseases Society of America [75].
                                                                              and a patient history, should be conducted by a physician experi-
                                                                              enced in the surveillance of cancer patients. There is little evidence
                                                                              to suggest that vaginal vault cytology adds significantly to the clin-
risk of lymph node involvement, pelvic lymph node dissection                  ical exam in detecting early disease recurrence. Routine use of vari-
(PLND) is recommended [52]. Sentinel node biopsy should be                    ous other radiological or biological follow-up investigations in
considered. Moreover, for these patients, some authors suggest                asymptomatic patients is not advocated, because the role of those
trachelectomy, a surgical procedure in which the uterine cervix               investigations has yet to be evaluated in a definitive manner. CT or
and adjacent tissues are removed [II, B].                                     PET/CT scan should be carried out as clinically indicated. A reason-
                                                                              able follow-up schedule involves follow-up visits every 3–6 months
                                                                              in the first 2 years and every 6–12 months in years 3–5. Patients
FIGO stage IA2                                                                should return to annual population-based general physical and pel-
                                                                              vic examinations after 5 years of recurrence-free follow-up [III, C].
For patients wishing to preserve fertility, cone biopsy or radical
trachelectomy with PLND is the standard procedure [53].
Sentinel node biopsy is under validation but may be considered
[II, B].                                                                        Methodology
                                                                              These Clinical Practice Guidelines were developed in accordance
                                                                              with the ESMO standard operating procedures for Clinical Practice
FIGO stage IB1 < 2 cm                                                         Guidelines development http://www.esmo.org/Guidelines/ESMO-
Scientific evidence shows that trachelectomy with pelvic lympha-              Guidelines-Methodology. The relevant literature has been selected
denectomy is the most appropriate surgical treatment of fertility             by the expert authors. A summary of recommendations is shown in
sparing in patients with these tumours. Tumours > 2 cm are                    Table 5. Levels of evidence and grades of recommendation have
clearly associated with a higher risk of recurrence (3% for le-               been applied using the system shown in Table 6. Statements without
sions  2 cm versus 17% for lesions > 2 cm); thus, international              grading were considered justified standard clinical practice by the
guidelines stress that this procedure is valid mostly for tumours             experts and the ESMO Faculty. This manuscript has been subjected
measuring  2 cm in diameter [II, B] [54, 55].                                to an anonymous peer review process.
   Currently, as documented by most international guidelines, rad-
ical trachelectomy is considered a standard fertility-sparing proced-
ure in patients with early cervical cancer and tumours < 2 cm.                  Disclosure
However, the low incidence of parametrial involvement reported in             CM and MMC have reported honoraria and participation at
patients with tumours < 2 cm and no nodal disease or LVSI suggest             advisory boards for Roche; SM has reported consulting for
DOI: https://doi.org/10.1093/annonc/mdy160
                                                                                                                     Annals of Oncology 29 (Supplement 4): iv262, 2018
                                                                                                                     doi:10.1093/annonc/mdy160
                                                                                                                     Published online 5 May 2018
CORRIGENDUM
C The Author(s) 2018. Published by Oxford University Press on behalf of the European Society for Medical Oncology.
V
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