Evidence map›Paper›PMID 29970075›Full record

ReviewWorld journal of surgical oncology2018

Schwannoma of the colon and rectum: a systematic literature review.

Ali Bohlok, Melody El Khoury, Anne Bormans, Maria Gomez Galdon, Michael Vouche, Issam El Nakadi, Vincent Donckier, Gabriel Liberale

Open access · goldAbstract readCase ReportsReview
In one paragraph

Review in World journal of surgical oncology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed
3.8field-weighted citation impact, top 7% 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

49 citing papers in PubMed, 74 citations in OpenAlex.

  1. Trial
  2. Rectal schwannoma mimicking malignant rectal cancer: a case report.International journal of surgery case reports · 2026
    Article
  3. Review
  4. Article
  5. Article
  6. Article
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  8. Article
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  11. Cecal schwannoma: A case report and literature review.The Journal of international medical research · 2025
    Review
  12. Article
  13. Article
  14. Article
  15. Endoscopic full-thickness resection of rectal schwannoma: A case report.World journal of gastrointestinal endoscopy · 2025
    Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 1 institution in 1 country.

Ali BohlokDepartment of Surgical Oncology, Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium.
Melody El KhouryDepartment of Surgical Oncology, Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium.
Anne BormansInstitutional Library, Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium.
Maria Gomez GaldonDepartment of Pathology, Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium.
Michael VoucheDepartment of Radiology, Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium.
Issam El NakadiDepartment of Surgical Oncology, Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium.
Vincent DonckierDepartment of Surgical Oncology, Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium.
Gabriel LiberaleDepartment of Surgical Oncology, Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium. Gabriel.liberale@bordet.be.ORCID http://orcid.org/0000-0001-8051-1588
Université Libre de Bruxelles · BE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSchwannomas of the colon and rectum are rare among gastrointestinal schwannomas. They are usually discovered incidentally as a submucosal mass on routine colonoscopy and diagnosed on pathologic examination of the operative specimen. Little information exists on the diagnosis and management of this rare entity. The aim of this study is to report a case of cecal schwannoma and the results of a systematic review of colorectal schwannoma in the literature. MAIN BODY: PubMed, Scopus, and Cochrane database searches were performed for case reports and case series of colonic and rectal schwannoma. Ninety-five patients with colonic or rectal schwannoma from 70 articles were included. Median age was 61.5 years (59% female). Presentation was asymptomatic (28%), rectorrhagia (23.2%), or abdominal pain (15.8%). Schwannoma occurred in the left and sigmoid colon in 36.8%, in the cecum and right colon in 30.5%, and in the rectum in 21.1%. Median tumor size was 3 cm and 56.2% of patients who underwent preoperative colonoscopy had a typical smooth submucosal mass. At pathology, 97.9, 13.7, and 5.3% of schwannomas stained positive for S100, vimentin, and GFAP, respectively. The median mitotic index was 1/50.

conclusionsColorectal schwannoma is a very rare subtype of gastrointestinal schwannoma which occurs in the elderly, almost equally in men and women. Schwannoma should be included in the differential diagnosis of a submucosal lesion along with gastrointestinal stromal tumor, neuro-endocrine tumors, and leiomyoma-leiomyosarcoma. Definitive diagnosis is based on immunohistochemistry of the operative specimen. Rarely malignant, surgery is the mainstay of treatment.

Indexed as

AgedCecal NeoplasmsColonic NeoplasmsFemaleHumansIncidental FindingsNeurilemmomaPrognosisRectal NeoplasmsColonDiagnosisRectumReviewSchwannomaTreatment

Identifiers

PMID29970075
PMCPMC6029403
OpenAlexW2809931753

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.