title: Double fetus-in-fetu: CT scan diagnosis in an adult.
abstract: A fetus-in-fetu (FIF) is an uncommon developmental abnormality characterized by a reasonably well-formed but aborted fetus that is seen in the form of an encapsulated, pedunculated vertebrate tumor in the patient's abdomen. We report an interesting case of a double FIF in a 20-year-old man, who presented with acute abdominal pain and a lump. CT scan of the abdomen revealed two ill-formed fetuses-in-fetu, which were seen as a 15-cm complex, encapsulated mass in the lower retroperitoneum; there was also free fluid in the abdomen. The diagnosis of a ruptured twin FIF was made. Complete surgical excision of the lesion was performed and the diagnosis was confirmed histopathologically. To the best of our knowledge, the CT scan findings of a ruptured double FIF in an adult have not been previously documented.
authors.affiliation: Department of Radiodiagnosis and Imaging Sciences, Dr. Vaishampaiyan Memorial Government Medical College, Solapur, Maharashtra, India.
authors.forename: B V
authors.initials: BV
authors.lastname: Daga
authors.forename: V A
authors.initials: VA
authors.lastname: Chaudhary
authors.forename: Amit S
authors.initials: AS
authors.lastname: Ingle
authors.forename: Vinayak B
authors.initials: VB
authors.lastname: Dhamangaokar
authors.forename: Deepti P
authors.initials: DP
authors.lastname: Jadhav
authors.forename: Prasanna A
authors.initials: PA
authors.lastname: Kulkarni