Small bowel (small intestine)
Benign tumors and tumor-like conditions

Author: Hanni Gulwani, M.D. (see Authors page)

Revised: 20 February 2018, last major update August 2012

Copyright: (c) 2003-2018,, Inc.

PubMed Search: Leiomyoma[TI] small bowel full text[sb]

Cite this page: Gulwani, H. Leiomyoma. website. Accessed October 18th, 2018.
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

Images hosted on PathOut server:

Esophageal leiomyomas

Positive stains
Negative stains
Differential diagnosis