Breast malignant, males, children
Carcinoma subtypes
Metaplastic carcinoma - spindle cell subtype

Topic Completed: 1 October 2012

Revised: 12 April 2019

Revised: 23 January 2019

Copyright: (c) 2002-2019,, Inc.

PubMed Search: Metaplastic carcinoma [title] breast

Monika Roychowdhury, M.D.
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Cite this page: Roychowdhury M Metaplastic carcinoma - spindle cell subtype. website. Accessed August 22nd, 2019.
Definition / general
  • Sarcomatoid morphology, plus either limited (< 5%) invasive carcinoma component or keratin positive sarcoma component (Am J Surg Pathol 2005;29:1456)
  • Excludes low grade fibromatosis-like metaplastic tumors
  • Note: some cases called spindle cell carcinoma in the literature have > 5% invasive carcinoma component
  • Also called sarcomatoid carcinoma or spindle cell carcinoma
Clinical features
Case reports
Clinical images

Contributed by Dr. Mark R. Wick

Osteoid production

Gross images

Contributed by Dr. Mark R. Wick

Microscopic (histologic) images

Contributed by Dr. Mark R. Wick

Osteoid production

Images hosted on other servers:


Spindle cell stroma

Various stains

Various images

Positive stains
Negative stains
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