RT Journal Article SR Electronic T1 Holoprosencephaly classified by computed tomography. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 433 OP 437 VO 5 IS 4 A1 N R Altman A1 D H Altman A1 J J Sheldon A1 J Leborgne YR 1984 UL http://www.ajnr.org/content/5/4/433.abstract AB Five cases are presented to demonstrate the computed tomographic (CT) spectrum of holoprosencephaly. The classifications of alobar, semilobar, and lobar types A and B holoprosencephaly are each represented, with an additional case of semilobar holoprosencephaly complicated by a subdural effusion.