Psoas abscess is a rare infection, difficult to diagnose, which can be primary or secondary, it is often caused by a bacterial micro-organism (Staphylococcus aureus, Escherichia coli), and in rare cases by a fungal micro-organism (Candida). We report an exceptional case of Candida tropicalis psoas abscess in a 52-year-old man with no history of pathology who had inflammatory lower back pain with fever and general deterioration. The biological assessment showed a renal insufficiency and a biological inflammatory syndrome, a computed tomography made in urgency was in favor of a psoas abscess. The bacteriological study of percutaneous drainage product allowed to isolate Candida tropicalis.
Keywords: Candida tropicalis; immunodepression; psoas abscess.