title: Twin fetus in fetu with immature teratoma: a case report and review of the literature.
abstract: Fetus in fetu is an extremely rare condition in which a fetus or fetus-like structure with a vertebral axis is seen in the body of its twin. This paper presents a case of fetus in fetu in a two- day-old female newborn who was referred for an abdominal mass, biliary vomiting, and feeding intolerance. After plain abdominal X-ray and ultrasonography, the patient underwent abdominal surgery with the primary diagnosis of teratoma or fetus in fetu. We found a retroperitoneal mass that consisted of double fetus in fetu and a separate undetermined mass. The pathologic examination confirmed double fetus in fetu and revealed a separate immature teratoma. She was discharged from the hospital after seven days in a healthy and normal condition. The level of serum alpha-fetoprotein was normal after three months of follow-up.
authors.affiliation: Bahrami Children's Hospital, Tehran University of Medical Sciences, Tehran, Iran. h_pourang24@yahoo.com
authors.forename: Houshang
authors.initials: H
authors.lastname: Pourang
authors.forename: Soheila
authors.initials: S
authors.lastname: Sarmadi
authors.forename: Seyed-Mohammad
authors.initials: SM
authors.lastname: Mireskandari
authors.forename: Mehrdad
authors.initials: M
authors.lastname: Soleimani
authors.forename: Mansour
authors.initials: M
authors.lastname: Mollaeian
authors.forename: Houman
authors.initials: H
authors.lastname: Alizadeh
authors.forename: Seyed-Mehdi
authors.initials: SM
authors.lastname: Alehosein
mesh_terms: D005260:Female; D005333:Fetus / Q000002:abnormalities*; D006801:Humans; D007231:Infant, Newborn; D013724:Teratoma / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D014430:Twins, Monozygotic; D000509:alpha-Fetoproteins / Q000032:analysis
chemical_list: D000509:alpha-Fetoproteins