[Treatment of psoas abscess. Report of a case and review of the literature].

Psoas abscess is an infrequent disease. We present a right psoas abscess diagnosed in a thirteen-year-old child. There wasn't a history of known trauma nor immunodeficiency. We didn't find another infection focus so the abscess was described as primary one. This is the most commonly presentation in children. Staphylococcus aureus was the bacteria identified in blood culture. The presenting symptoms were bottom and hip pain, limp and fever. The differential diagnosis was established with suppurative arthritis of the hip. Diagnosis was confirmed by Magnetic Resonance. In regard to treatment the patient was exclusively treated with systemic antibiotics, high spectrum of activity. The patient didn't require percutaneous-drainage. Though surgical drainage wasn't made, evolution was favourable and recurrence wasn't observed.