Evidence map›Paper›PMID 34958352›Full record

SynthesisBJS open2021

Surgical treatment of anorectal melanoma: a systematic review and meta-analysis.

Esther Jutten, Schelto Kruijff, Anne Brecht Francken, Martijn F Lutke Holzik, Barbara L van Leeuwen, Henderik L van Westreenen, Kevin P Wevers

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in BJS open, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
2.2field-weighted citation impact, top 9% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed, 36 citations in OpenAlex.

  1. Primary anorectal melanotic melanoma: a case report.Journal of medical case reports · 2026
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  5. Review
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  12. A rare account of incidentally discovered anal melanoma.Journal of surgical case reports · 2024
    Article
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  16. Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 1 country.

Esther JuttenDepartment of Surgery, Hospital Group Twente, Zilvermeeuw 1, 7609 PP Almelo, the Netherlands.ORCID 0000-0002-1511-2027
Schelto KruijffDepartment of Surgery, University Medical Centre Groningen, Hanzeplein 1, 9713 GZ Groningen, the Netherlands.
Anne Brecht FranckenDepartment of Surgery, Isala Zwolle, Dokter van Heesweg 2, 8025 AB Zwolle, the Netherlands.
Martijn F Lutke HolzikDepartment of Surgery, Hospital Group Twente, Zilvermeeuw 1, 7609 PP Almelo, the Netherlands.
Barbara L van LeeuwenDepartment of Surgery, University Medical Centre Groningen, Hanzeplein 1, 9713 GZ Groningen, the Netherlands.
Henderik L van WestreenenDepartment of Surgery, University Medical Centre Groningen, Hanzeplein 1, 9713 GZ Groningen, the Netherlands.
Kevin P WeversDepartment of Surgery, Isala Zwolle, Dokter van Heesweg 2, 8025 AB Zwolle, the Netherlands.
University Medical Center Groningen · NLIsala · NLZiekenhuis Groep Twente · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAnorectal melanoma is a rare neoplasm with a poor prognosis. The surgical approaches for anorectal melanoma can be categorized into local excision (procedures without lymph node removal and preservation of the rectum) and extensive resection (procedures with rectum and pararectal lymph node removal). The aim of this systematic review and meta-analysis was to compare the survival of patients who underwent extensive resection with that of patients who underwent local excision, stratifying patients according to tumour stage.

methodsA literature review was performed according to PRISMA guidelines by searching MEDLINE/PubMed for manuscripts published until March 2021. Studies comparing survival outcomes in patients with anorectal melanoma who underwent local excision versus extensive resection were screened for eligibility. Meta-analysis was performed for overall survival after the different surgical approaches, stratified by tumour stage.

resultsThere were 347 studiesidentified of which 34 were included for meta-analysis with a total of 1858 patients. There was no significant difference in overall survival between the surgical approaches in patients per stage (stage I odds ratio 1.30 (95 per cent c.i. 0.62 to 2.72, P = 0.49); stage II odds ratio 1.61 (95 per cent c.i. 0.62 to 4.18, P = 0.33); stage I-III odds ratio 1.19 (95 per cent c.i. 0.83 to 1.70, P = 0.35). Subgroup analyses were conducted for the time intervals (<2000, 2001-2010 and 2011-2021) and for continent of study origin. Subgroup analysis for time interval and continent of origin also showed no statistically significant differences in overall survival.

conclusionNo significant survival benefit exists for patients with anorectal melanoma treated with local excision or extensive resection, independent of tumour stage.

Indexed as

Anus NeoplasmsMelanomaRectal NeoplasmsHumansNeoplasm Recurrence, LocalRetrospective Studies

Identifiers

PMID34958352
PMCPMC8675246
OpenAlexW4200587443

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.