Small intestine & ampulla

Benign tumors / tumor-like conditions


Last author update: 1 August 2012
Last staff update: 21 July 2023

Copyright: 2003-2024,, Inc.

PubMed Search: Leiomyoma small bowel

Hanni Gulwani, M.B.B.S.
Page views in 2023: 2,934
Page views in 2024 to date: 1,259
Cite this page: Gulwani H. Leiomyoma. website. Accessed May 19th, 2024.
Definition / general
  • Benign smooth muscle tumors that arise from small bowel muscularis propria or muscular mucosa
  • Duodenal leiomyomas of muscular mucosa are incidental, 1 - 2 mm, merge with muscularis mucosa; those not from muscularis mucosa are also often incidental but larger, 2 - 4 cm, with firm, white, whorled cut surface
Microscopic (histologic) description
  • Low cellularity, no / rare mitotic figures, resembles esophageal leiomyoma
Microscopic (histologic) images

AFIP images

Esophageal leiomyomas

Positive stains
Negative stains
Differential diagnosis
Back to top
Image 01 Image 02