title: Fetus in fetu associated with an undescended testis.
abstract: Fetus in fetu is an extremely uncommon cause of an abdominal mass in the neonate; fewer than 30 generally accepted cases are recorded in the literature. We report a case of intraabdominal fetus in fetu, with a unique location within an undescended left testicle. Chromosomal studies of cells from the fetus in fetu and the surviving infant revealed identical 46,XY karyotypes.
authors.forename: C E
authors.initials: CE
authors.lastname: Alpers
authors.forename: M R
authors.initials: MR
authors.lastname: Harrison
mesh_terms: D009008:Abnormalities, Severe Teratoid; D003456:Cryptorchidism / Q000473:pathology*; D005333:Fetus / Q000473:pathology*; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D013724:Teratoma / Q000473:pathology; D014427:Twins; D014430:Twins, Monozygotic