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Rare disease
CASE REPORT
Rectal mucocele in the anterior wall of the rectum
  1. Daisuke Ishii,
  2. Takanori Aoki,
  3. Satoshi Inaba,
  4. Hidehiko Yabuki
  1. Department of Surgery, Hokkaido P.W.F.A.C Engaru-Kosei General Hospital, Engaru-cho Mombetsu-gun, Japan
  1. Correspondence to Dr Daisuke Ishii, daisuke_l_s{at}yahoo.co.jp

Summary

An 84-year-old man presented in 2009 with a sensation of discomfort in his anus, combined with difficulty in urination. He had previously undergone a haemorrhoidectomy in 1964. After examination, he was diagnosed with a rectal mucosal cyst and followed up for observation. In 2015, he presented to our hospital complaining that the cyst was prolapsing from his anus. CT revealed a 48×41 mm cystic mass in the anterior wall of the rectum. Tumour extirpation, via a transanal route, was performed. The postoperative pathological diagnosis confirmed a rectal mucocele. Rectal mucoceles are extremely rare, with no prior report of a mucocele in the anterior wall of the rectum. In this case, we believe the mucocele developed from an invagination of the mucous membrane or obstruction of the anal gland during suturing during the previous haemorrhoid surgery.

  • gastrointestinal surgery
  • gastroenterology

https://doi.org/10.1136/bcr-2018-225097

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    Footnotes

    • Contributors These authors saw this case in the department of surgery, and equally contributed for preparation of this manuscript: DI and TA confirmed this case as a rectal mucocele with a physician; DI and TA operated on the patient and wrote the case report; DI obtained consent from the patient; SI is the assistant director of the hospital, and HY is the director of the hospital; SI and HY rolled the instructor of the operation and instructed of the overall description of this manuscript; all the authors critically appraised the manuscript and contributed to make necessary changes in the article.

    • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

    • Competing interests None declared.

    • Patient consent Obtained.

    • Provenance and peer review Not commissioned; externally peer reviewed.