title: Fetus-in-fetu: report of a case and a review of the literature.
abstract: A 2-week-old girl was found to have an asymptomatic abdominal mass on routine examination. Surgical removal revealed the mass to have 4 limb buds situated relative to a palpable vertebral column. Karyotyping revealed the mass to be 46 XX. The mass was therefore diagnosed as a case of fetus-in-fetu. The literature on this rare entity is reviewed, and the diagnosis and pathogenesis of the disease are discussed.
authors.affiliation: Division of Pediatric Surgery, Department of Surgery, Women and Children's Hospital of Buffalo, State University of New York at Buffalo, Buffalo, NY 14222, USA.
authors.forename: Mauricio A
authors.initials: MA
authors.lastname: Escobar
authors.forename: Jon E
authors.initials: JE
authors.lastname: Rossman
authors.forename: Michael G
authors.initials: MG
authors.lastname: Caty
mesh_terms: D000008:Abdominal Neoplasms / Q000175:diagnosis; D003937:Diagnosis, Differential; D005260:Female; D005333:Fetus / Q000002:abnormalities*; D006801:Humans; D007231:Infant, Newborn; D011859:Radiography; D012186:Retroperitoneal Neoplasms / Q000175:diagnosis; D012187:Retroperitoneal Space / Q000000981:diagnostic imaging* / Q000473:pathology; D013724:Teratoma / Q000175:diagnosis; D014430:Twins, Monozygotic