Occult retroperitoneal abscess presenting as septic arthritis of the hip.
D000038:Abscess / Q000175:diagnosis* / Q000000981:diagnostic imaging; D000368:Aged; D001170:Arthritis, Infectious / Q000175:diagnosis*; D003937:Diagnosis, Differential; D004927:Escherichia coli Infections / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006621:Hip Joint; D006801:Humans; D008297:Male; D011859:Radiography; D012187:Retroperitoneal Space