Skin - Nonmelanocytic tumors
Vascular tumors
Glomus tumor

Author: Christopher Hale, M.D. (see Authors page)

Revised: 6 October 2016, last major update July 2012

Copyright: (c) 2001-2016,, Inc.

PubMed search: glomus [title] tumor skin

Cite this page: Glomus tumor. website. Accessed October 28th, 2016.
Definition / General
  • Usually painful subungual tumors
Case Reports
Gross Description
  • Painful nodule, often acral
Gross Images
Images hosted on other servers:

Glomus tumor during exploration

Preoperative and
photographs views
of the lesion
Micro Description
  • Dermal or subcutaneous tumors, either solid or vascular, composed of glomus cells, a modified smooth muscle cell with abundant cytoplasm and oval nucleus
  • Either (a) solid variant - proliferation of glomus cells with no/rare vascular lumina or (b) vascular variant - abundant vascular lumina that may resemble cavernous hemangioma
Micro Images
Images hosted on PathOut server:

Courtesy of Angel Fernandez-Flores, M.D., Ph.D., Hospital El Bierzo and Clinica Ponferrada, Spain

Images hosted on other servers:

Blood vessels surrounded by proliferation of round cells
in fibrous stroma; vascular channels are lined by endo-
thelial cells and aggregates of round cells with darkly
staining round - ovoid nuclei and eosinophilic cytoplasm

Positive Stains
Differential Diagnosis