Colon tumor
Mesenchymal tumors

Author: Charanjeet Singh, M.D. (see Authors page)

Revised: 4 January 2017, last major update May 2012

Copyright: (c) 2003-2017,, Inc.

PubMed search: colonic leiomyosarcoma

Cite this page: Leiomyosarcoma. website. Accessed March 29th, 2017.
Definition / General
Gross Description
  • Intraluminal, bulging and polypoid mass
Gross Images

Images hosted on other servers:

Leiomyosarcoma vs. GIST

Micro Description
Micro Images

Well differentiated tumor

Left: moderately differentiated; right: poorly differentiated

Spindle and
epithelioid tumors
with osteoclast-like
giant cells

Virtual Slides
Positive Stains
Negative Stains
Molecular / Cytogenetics Description
  • No c-kit mutations
Differential Diagnosis
Additional References