Stromal / other tumors

Author: Elliot Weisenberg, M.D. (see Authors page)

Revised: 19 December 2016, last major update July 2012

Copyright: (c) 2003-2016,, Inc.

PubMed Search: gastric schwannoma
Cite this page: Schwannoma. website. Accessed February 22nd, 2018.
Definition / general
  • Well circumscribed, benign nerve sheath tumor (also called neurilemmoma), much less common (~ 1 / 50) in stomach than GIST
Case reports
Microscopic (histologic) description
  • Well circumscribed but not encapsulated, with interlacing bundles of spindle cells and collagen
  • Often nuclear pallisading, Verocay bodies, hyalinized vessels
  • May have nuclear atypia, inflammatory cells, peripheral cuff of lymphoid aggregates
  • No mitotic figures, no skenoid fibers, no epithelioid features
Microscopic (histologic) images

Images hosted on PathOut server:

Case of the Week #347:

46 year old woman

Images hosted on other servers:

Cuff of inflammation is common

Positive stains
Negative stains