What are the histologic characteristics of spindle cell rhabdomyosarcoma?

Updated: Feb 01, 2019
  • Author: Amelia F Drake, MD; Chief Editor: Arlen D Meyers, MD, MBA  more...
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The spindle cell subtype of embryonal rhabdomyosarcoma accounts for 3% of all cases. It has a fascicular, spindled, and leiomyomatous growth pattern and can demonstrate notable rhabdomyoblastic differentiation. Some neoplasms show marked collagen deposition and have a nested, storiform growth pattern. This subtype occurs predominantly in the paratesticular region and is rare in the head and neck.

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