title: Septic ischial bursitis in systemic lupus erythematosus presenting as a perirectal mass.
abstract: We describe a patient with systemic lupus erythematosus with dissection of a large ischial bursal cyst which presented as a perirectal mass. Dissecting bursal and articular synovial cysts are known to cause multiple complications including a number of "pseudosyndromes" such as pseudothrombophlebitis. The cyst in this case was initially thought to represent a perirectal abscess and we propose the term "pseudoperirectal abscess" to describe this condition. This cyst was found to be infected and required an extended course of antibiotics and bursectomy.
authors.affiliation: Arthritis Service, Rancho Los Amigos Medical Center, Downey, CA 90242.
authors.forename: P
authors.initials: P
authors.lastname: Lambie
authors.forename: R
authors.initials: R
authors.lastname: Kaufman
authors.forename: T
authors.initials: T
authors.lastname: Beardmore
mesh_terms: D000038:Abscess / Q000175:diagnosis* / Q000601:surgery; D002062:Bursitis / Q000175:diagnosis* / Q000601:surgery; D003560:Cysts / Q000175:diagnosis* / Q000601:surgery; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007512:Ischium / Q000473:pathology* / Q000601:surgery; D008180:Lupus Erythematosus, Systemic / Q000150:complications*; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D012002:Rectal Diseases / Q000175:diagnosis* / Q000601:surgery; D012086:Reoperation; D013203:Staphylococcal Infections / Q000175:diagnosis* / Q000601:surgery