Case Report

Disseminated Pyomyositis Mimicking Idiopathic Inflammatory Myopathy

SHAHIN WALJI, JOEL RUBENSTEIN, PATRICK SHANNON, and SIMON CARETTE

ABSTRACT.

Although pyomyositis is uncommon in North America, it may be difficult to distinguish clinically from inflammatory myositis. We describe 2 cases of infectious myositis that were initially diagnosed as inflammatory myositis. As illustrated by these cases, infectious myositis is often a challenging diagnosis and requires a high degree of suspicion. (J Rheumatol 2005;32:184-7)

Key Indexing Terms:

PYOMYOSITIS
INFECTIOUS MYOSITIS
MUSCLE INFECTION
TUBERCULOUS MYOSITIS
POLYMYOSITIS

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From the Division of Rheumatology, Department of Medicine, University Health Network, University of Toronto, Toronto, Ontario, Canada.

S. Walji, MD, FRCPC; J. Rubenstein, MD, FRCPC; P. Shannon, MD, FRCPC; S. Carette, MD, FRCPC.

Address reprint requests to Dr. S. Walji, Joseph and Wolf Lebovic Building, Mount Sinai Hospital, 60 Murray St., Room 2-029, Toronto, ON, M5G 1X5. E-mail: swalji@mtsinai.on.ca

Submitted January 13, 2004; revision accepted August 10, 2004.

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