How are undifferentiated soft tissue sarcoma (STS) classified?

Updated: Sep 02, 2018
  • Author: Steven C Katz, MD, FACS; Chief Editor: Edwin Choy, MD, PhD  more...
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Answer

Answer

A chapter on undifferentiated/unclassified sarcomas was added and includes the following subtypes:

  • Undifferentiated spindle cell sarcoma
  • Undifferentiated pleomorphic sarcoma (previously classified as malignant fibrous histiocytoma)
  • Undifferentiated round cell sarcoma
  • Undifferentiated epithelioid sarcoma
  • Undifferentiated sarcoma not otherwise specified

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