title: Primary psoas abscess.
abstract: Infectious processes in the retroperitoneal space often involve the psoas muscle. These infections usually are secondary to other intra-abdominal or intrapelvic inflammatory processes but rarely they will arise primarily within the retroperitoneum. These primary infections occur most often in younger patients and usually will demonstrate a chronic illness in which the diagnosis often is missed. We describe a 22-year-old man with a 2-year history of symptoms before the diagnosis was confirmed. The clinical presentation of the process and pathophysiology are discussed briefly.
mesh_terms: D000038:Abscess / Q000175:diagnosis*; D000328:Adult; D006801:Humans; D008297:Male; D009135:Muscular Diseases / Q000175:diagnosis*; D012187:Retroperitoneal Space; D013203:Staphylococcal Infections / Q000175:diagnosis*; D013997:Time Factors