Anorectal Leiomyoma : Case Report of Rare Tumor with unusual Presentation

Abstract

Gastrointestinal stromal tumour (GIST) is a rare tumour of gastrointestinal tract, comprising of 0.1-3.0% of all gastrointestinal malignancies. They are commonly found in stomach (60-70%), very rarely in rectum and anal canal (<5%). The present case report is of a large anorectal leiomyoma (142×80mm) arising from posterior rectal wall, with its unusual presentation of urinary retention. In our case, in view of its massive size, recurrence and malignant transformation, we planned abdominoperineal resection. Although size and histological grade play an important role, complete resection still is considered the most significant favorable prognostic factor.

Rectal Gastrointestinal Stromal Tumors

“…In fact, 30% of the cases were detected accidentally as part of a per-rectal examination in a gynecological assessment or during surgery or endoscopy [ 3 ]. In rare cases, urinary symptoms, such as urinary obstruction, were the first presentation [ 5 ].…”

Calcifying fibrous tumor of the rectum - a case report

“…A leiomyoma is a rare tumor in the gastrointestinal tract. Tumors appear as a well-defined soft tissue intensity mass, the heterogeneous intermediate signal intensity with high signal intensity areas on T1-weighted sequences, and intermediate to high signal intensity on T2-weighted sequences (14). Schwannomas are peripheral nerve tumors arising from Schwann cells of the nerve sheath, rarely located in the pelvis.…”

Anorectal Gastrointestinal Stromal Tumour: A Case Treated with Radical Surgery

“…However, another case reported 14 cm sized anorectal GIST needed APR. 5 Hence, controversy of whether to go for radical approach or not is still on.…”