Soft tissue
Peripheral nerve tumors
Schwannoma, microcystic-reticular variant

Topic Completed: 1 November 2012

Minor changes: 1 November 2019

Copyright: 2002-2019,, Inc.

PubMed Search: Microcystic-reticular variant

Vijay Shankar, M.D.
Page views in 2019: 537
Page views in 2020 to date: 255
Cite this page: Shankar V. Schwannoma, microcystic-reticular variant. website. Accessed June 7th, 2020.
Definition / general
Case reports
Gross description
  • Median 4 cm, range 0.4 to 23 cm
Microscopic (histologic) description
  • Circumscribed, unencapsulated tissue (encapsulated if in subcutis)
  • Infiltrative in visceral locations
  • Microcystic and reticular growth pattern with anastomosing and intersecting spindle cells, distributed around islands of myxoid or collagenous / hyalinized stroma
  • Round / oval nuclei with tapering, indistinct nucleoli
  • 0 - 3 MF / 50 HPF
  • No necrosis, no pleomorphism
Microscopic (histologic) images

Images hosted on other servers

GI tract


Positive stains
Negative stains
Electron microscopy images

Images hosted on other servers

Irregular cell borders, elongated nuclei

Back to top