RT Journal Article SR Electronic T1 Intracranial fetus-in-fetu: CT diagnosis. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1326 OP 1329 VO 13 IS 5 A1 Yang, S T A1 Leow, S W YR 1992 UL http://www.ajnr.org/content/13/5/1326.abstract AB 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.