Psoas abscess is a rare infection, which can present a diagnostic challenge. The classical symptoms are fever, rigor and pain in the loin, lower abdomen, groin or hip, as well as a characteristic limp, but these symptoms can vary. The general health can deteriorate with delayed diagnosis and anemia, weight loss and anorexia can develop. CT is the best diagnostic method to demonstrate the localization and extent of the abscess and also possible sources of infection in the neighbourhood. 14 cases of psoas abscess, which were largely diagnosed and treated in the urological department, are presented and the clinical spectrum of this infection is discussed.