title: Malignant Psoas abscess or pseudomyxoma extraperitonei.
abstract: Primary adenocarcinoma of appendix is an uncommon gastrointestinal malignancy. Similarly, Psoas abscess is an entity, which sometimes requires extensive work-up to reach a diagnosis. Combined presentation of these two rare conditions is not only exceptional, but also diagnostically challenging. We present a case of a lady who presented with recurrent UTI secondary to right sided ureteric obstruction, referred right hip joint pain resulting from a Psoas abscess, which eventually turned out to be a consequence of metastatic adenocarcinoma of appendix, causing pseudomyxoma extraperitonei, with simultaneous intraperitoneal deposits.
authors.affiliation: Department of Emergency Medicine, The Aga Khan University Hospital, Karachi. amber.mehmood@aku.edu
authors.forename: Amber
authors.initials: A
authors.lastname: Mehmood
authors.forename: Kiran
authors.initials: K
authors.lastname: Ejaz
authors.forename: Turab Ibrahim
authors.initials: TI
authors.lastname: Pishori
mesh_terms: D000230:Adenocarcinoma / Q000150:complications / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D001063:Appendiceal Neoplasms / Q000150:complications / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D018771:Arthralgia / Q000209:etiology; D017809:Fatal Outcome; D005260:Female; D006621:Hip Joint / Q000473:pathology; D006801:Humans; D008875:Middle Aged; D009852:Omentum / Q000473:pathology; D010051:Ovarian Neoplasms / Q000556:secondary; D010534:Peritoneal Neoplasms / Q000209:etiology* / Q000556:secondary / Q000601:surgery; D011379:Prognosis; D011553:Pseudomyxoma Peritonei / Q000209:etiology* / Q000473:pathology / Q000601:surgery; D016659:Psoas Abscess / Q000150:complications / Q000209:etiology* / Q000601:surgery; D012008:Recurrence; D014552:Urinary Tract Infections