Small bowel (small intestine)
Benign tumors and tumor-like conditions
Neuromuscular and vascular hamartoma of small bowel

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

Revised: 20 February 2018, last major update August 2012

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

PubMed Search: Neuromuscular and vascular hamartoma of small bowel

Cite this page: Gulwani, H. Neuromuscular and vascular hamartoma of small bowel. website. Accessed March 22nd, 2018.
Definition / general
  • Also called small bowel hamartoma
  • Similar to diaphragm disease (annular constrictions causing small bowel obstruction associated with NSAIDs) but without NSAID association (Am J Surg Pathol 1999;23:1414)
Case reports
Gross description
  • Multiple circumferential indentions of serosa corresponding to discrete ridges on mucosal surface
Microscopic (histologic) description
  • Ridges composed of submucosa only, contain proliferating blood vessels surrounded by smooth muscle fibers originating from a frayed muscularis mucosa
  • Variable nerve and ganglionic cells present in fibrous collagenous tissue
  • No / minimal inflammatory infiltrate
Microscopic (histologic) images

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