J Korean Radiol Soc.  2002 Sep;47(3):313-316. 10.3348/jkrs.2002.47.3.313.

Proliferative Myositis: A Case Report

Affiliations
  • 1Department of Diagnostic Radiology, College of Medicine, Chosun University, Korea. yshkim@mail.chosun.ac.kr
  • 2Department of Pathology, College of Medicine, Chosun University, Korea.

Abstract

We report a case of proliferative myositis arising in the pectoralis major muscle of a 59-year-old man who presented with palpable mass. The initial clinical impression was a malignant tumor. Ultrasonography revealed the lesion as a spindle-shaped hypoechoic mass, and MR imaging of the left pectoralis major muscle showed hypointensity at T1-weighted imaging, hyperintensity at T2-weighted imaging, and strong enhancement at contrast-enhanced T1-weighted imaging.

Keyword

Myositis; Muscles, US; Muscles, MR

MeSH Terms

Humans
Magnetic Resonance Imaging
Middle Aged
Myositis*
Ultrasonography
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