Rhabdomyosarcoma MRI

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1];Associate Editor(s)-in-Chief: Suveenkrishna Pothuru, M.B,B.S. [2]

Overview

On MRI, rhabdomyosarcoma is characterized by low to intermediate intensity on T1, hyperintense on T2, and considerable contrast enhancement on T1 contrast.

MRI

• MRI is used for for evaluation of primary tumor and its invasion.
• MRI is used for diagnosis of primary location of rhabdomyosarcoma in:
  • Head and neck
  • Paraspinal
  • parameningeal regions
  • Extremities
  • Pelvic tumors
• MRI findings or rhabdomyosarcoma are:
  • T1:
    • Low to intermediate intensity
    • Hemorrhage areas are poresent in alveolar rhabdomyosarcoma
  • T2:
    • Hyperintense
    • Prominent flow voids are present in extremity lesions of rhabdomyosarcoma
  • T1 C+ (Gd):
    • Considerable enhancement