title: Intracranial fetus-in-fetu: CT diagnosis.
abstract: The authors present a case of fetus-in-fetu in which the CT findings are compatible with an earlier description by Nocera et al., i.e., a "round or tubular collection of very low density fat surrounding a central bony structure (probably one of the legs)." Additionally, sonography showed a heterogeneous mass with limb-like structures in the left lateral ventricle. Plain films can confirm the presence of a vertebral column and identify specific bony structures, but CT is a valuable aid in cases where plain films were not obtained or are inconclusive.
authors.affiliation: Department of Radiology, China Medical College Hospital, Taiwan.
authors.forename: S T
authors.initials: ST
authors.lastname: Yang
authors.forename: S W
authors.initials: SW
authors.lastname: Leow
mesh_terms: D001932:Brain Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D002552:Cerebral Ventricles; D002828:Choristoma / Q000000981:diagnostic imaging* / Q000473:pathology; D004200:Diseases in Twins; D005260:Female; D005333:Fetus / Q000002:abnormalities*; D006801:Humans; D007223:Infant; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography