title: Carcinomatous perforation of the sigmoid colon presenting as a thigh mass.
abstract: We report a patient presenting with a left psoas abscess causing necrotizing fasciitis of the upper thigh. The patient underwent exploration of the left thigh through a medial approach, confirming necrotizing fasciitis of the adductor compartment and the femoral triangle. The infective process also involved the left psoas. This was explored retroperitoneally through a left pararectal laparotomy incision. Further exploration revealed a carcinomatous ulcer of the sigmoid colon. Despite active resuscitation, antibiotic therapy, and further debridement, the patient died three days after admission.
authors.affiliation: Department of Orthopaedics and Traumatology, Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong.
authors.forename: T P
authors.initials: TP
authors.lastname: Lam
authors.forename: N
authors.initials: N
authors.lastname: Maffulli
authors.forename: E H
authors.initials: EH
authors.lastname: Chen
authors.forename: J C
authors.initials: JC
authors.lastname: Cheng
mesh_terms: D000368:Aged; D003937:Diagnosis, Differential; D019115:Fasciitis, Necrotizing / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000601:surgery; D017809:Fatal Outcome; D005260:Female; D006801:Humans; D007416:Intestinal Perforation / Q000175:diagnosis* / Q000503:physiopathology / Q000601:surgery; D016659:Psoas Abscess / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000601:surgery; D011859:Radiography; D012811:Sigmoid Neoplasms / Q000175:diagnosis* / Q000503:physiopathology / Q000601:surgery