Small bowel (small intestine)
Benign tumors and tumor-like conditions
Neuromuscular and vascular hamartoma of small bowel
Reviewer: Hanni Gulwani, M.D. (see Reviewers page)
Revised: 22 December 2012, last major update August 2012
Copyright: (c) 2003-2012, PathologyOutlines.com, Inc.
● 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)
● 32 year old man with obstruction (J Lab Physicians 2010;2:109)
● Neuromuscular and vascular hamartoma arising in a Meckel's diverticulum (Pathology 2006;38:173)
● Multiple circumferential indentions of serosa corresponding to discrete ridges on mucosal surface
● 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
End of Small bowel (small intestine) > Benign tumors and tumor-like conditions > Neuromuscular and vascular hamartoma of small bowel
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