Gaspari et al identified findings on ultrasonography of a skin abscess that are associated with methicillin-resistant Staphylococcus aureus (MRSA). The authors are from UMass Memorial Medical Center and Massachusetts General Hospital.
Patient selection: skin abscess
Exam: ultrasonography
Features associated with a skin abscess caused by MRSA:
(1) lack of a well-defined edge
(2) small volume
(3) irregular or indistinct shape
Performance:
• The sensitivity was 89% and specificity 45%.
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