Small bowel (small intestine)
Other malignancies

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

Revised: 23 February 2018, last major update August 2012

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

PubMed Search: Leiomyosarcoma[TI] small bowel[TIAB]

Page views in 2018: 349
Page views in 2019 to date: 59
Cite this page: Gulwani, H. Leiomyosarcoma. website. Accessed February 17th, 2019.
Definition / general
Case reports
Gross description
  • Intraluminal, bulging, polypoid tumor (duodenal tumors - mean 14 cm)
Gross images

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Leiomyosarcoma of small bowel

Microscopic (histologic) description
  • Resemble smooth muscle cells
  • High grade features (pleomorphism, atypia, mitotic figures, necrosis)
Positive stains
Negative stains