Psoas muscle abscess caused by Mycobacterium tuberculosis and Staphylococcus aureus: Case report and review

Tuberculosis psoas muscle abscess is currently an uncommon clinical entity in industrialized countries. it was considered the predominant cause of the se abscesses in the early part of the 20(th) century as a result of complic ated Potts disease. We describe the case of a psoas abscess caused by the c ombination of Mycobacterium tuberculosis and Staphylococcus aureus. In this patient, the abscess was not associated with Potts disease but with osteom yelitis of the iliac crest, in which the evaluation with magnetic resonance imaging was very specific in determining the extent and regional spread.