title: Iliopsoas myositis mimicking appendicitis: MRI diagnosis.
abstract: Myositis of the truncal muscles can closely mimic acute appendicitis. Myositis is the early stage of muscular infection. It is characterized by diffuse muscular pain and swelling without a distinct mass. Early diagnosis of myositis improves the outcome and surgical debridement is usually avoided. Pyomyositis, the advanced stage of the disease, can be diagnosed by MRI examination. We present a case of early bacterial myositis that was diagnosed by MRI.
authors.affiliation: Department of Radiology, Medical College of Pennsylvania Hospital, Philadelphia 19129, USA.
authors.forename: M G
authors.initials: MG
authors.lastname: Wysoki
authors.forename: E
authors.initials: E
authors.lastname: Angeid-Backman
authors.forename: B A
authors.initials: BA
authors.lastname: Izes
mesh_terms: D000208:Acute Disease; D000293:Adolescent; D001064:Appendicitis / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D009220:Myositis / Q000175:diagnosis* / Q000382:microbiology; D016658:Psoas Muscles / Q000000981:diagnostic imaging / Q000382:microbiology / Q000473:pathology*; D012480:Salmonella Infections / Q000175:diagnosis / Q000209:etiology; D012477:Salmonella enteritidis / Q000302:isolation & purification; D014057:Tomography, X-Ray Computed