Breast malignant, males, children
Sarcoma NOS

Author: Monika Roychowdhury, M.D. (see Authors page)

Revised: 29 December 2016, last major update August 2012

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

PubMed Search: sarcoma NOS
Cite this page: Sarcoma NOS. website. Accessed January 18th, 2017.
Definition / General
  • A diagnosis of exclusion
  • Extensive tumor sampling and immunostaining are required before making this diagnosis
  • Not part of WHO breast classification
Micro Description
  • Spindle cells with markedly pleomorphic nuclei and abundant mitotic figures (Am J Surg Pathol 2006;30:450)
  • By definition, no evidence of carcinoma or a specific type of sarcomatous differentiation
Positive Stains
Negative Stains
Differential Diagnosis