Figure 2. CT of lumbar spine. (A, axial) Collection of intense fluid (asterisk) and air (arrow) densities was observed in the right psoas muscle. Note the collection extending from right iliopsoas muscle, (B, axial) to right gluteus minimus muscle (C, axial). The appearance was in concordance with muscle abscess. The extent of the abscess was also demonstrated on the sagittal reconstruction image (D, sagittal)

From

Staphylococcus aureus Bacteremia Complicated by Psoas Abscess

David Bellin, Eric Chun-Pu Chu

American Journal of Medical Case Reports. 2015, 3(11), 383-386 doi:10.12691/ajmcr-3-11-10