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Streptococcus dysagalactiae pyomyositis
Author(s) -
Terada Norihiko,
Hamada Yuzuru,
Tokuda Yasuharu
Publication year - 2017
Publication title -
journal of general and family medicine
Language(s) - English
Resource type - Journals
ISSN - 2189-7948
DOI - 10.1002/jgf2.86
Subject(s) - pyomyositis , medicine , streptococcus , microbiology and biotechnology , surgery , bacteria , abscess , biology , genetics
A 49 year old man with a palpable femoral tumor was examined by ultrasonography, CT and MRI within five days. Ultrasonography and CT indicated a solid malignant tumor, whereas MRI showed high signal intensity throughout the medial vastus muscle on T2-weighted images and centrally localized areas with low signal intensity on T1-weighted images indicative of pyomyositis. This diagnosis was immediately confirmed at surgery. Prompt diagnosis of pyomyositis is of utmost importance since it can rapidly develop into a life-threatening condition. The present case demonstrates the superiority of MRI in this clinical entity, whereas ultrasonography and CT may be misleading in the early stage.

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