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

Topic Completed: 1 August 2012

Revised: 13 March 2019

Copyright: 2003-2019,, Inc.

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

Hanni Gulwani, M.B.B.S.
Page views in 2018: 674
Page views in 2019 to date: 652
Cite this page: Gulwani H. Leiomyoma. website. Accessed September 18th, 2019.
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
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