title: Extraperitoneal abdominopelvic inflammatory pseudotumor: report of four cases.
abstract: We describe four cases of inflammatory pseudotumor seen at our institution in the past 4 years. Four children were each found to have a large extraperitoneal mass on imaging studies, three of which were in the pelvis. Malignant sarcomatous tumors were suspected. Surgical biopsy of each mass, however, revealed inflammatory pseudotumor.
authors.affiliation: Department of Radiology, Division of Pediatric Radiology, Schneider Children's Hospital, Long Island Jewish Medical Center, The Long Island Campus for the Albert Einstein College of Medicine, 270-05 76th Avenue, New Hyde Park, NY 11040, USA.
authors.forename: J M
authors.initials: JM
authors.lastname: Jimenez
authors.forename: M
authors.initials: M
authors.lastname: Poustchi-Amin
authors.forename: J C
authors.initials: JC
authors.lastname: Leonidas
authors.forename: A
authors.initials: A
authors.lastname: Pena
mesh_terms: D000005:Abdomen; D000008:Abdominal Neoplasms / Q000175:diagnosis; D000293:Adolescent; D001706:Biopsy; D005871:Castleman Disease / Q000473:pathology; D002648:Child; D003937:Diagnosis, Differential; D005260:Female; D006104:Granuloma, Plasma Cell / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D006689:Hodgkin Disease / Q000473:pathology; D006801:Humans; D007813:Laparotomy; D008279:Magnetic Resonance Imaging; D008297:Male; D010386:Pelvic Neoplasms / Q000175:diagnosis; D010388:Pelvis; D010537:Peritoneum; D012509:Sarcoma / Q000175:diagnosis; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography