Antenatal ultrasonographic findings differentiating complete from partial agenesis of the corpus callosum

Byline: Ron Tepper, Yaron Zalel, Eti Gaon, Moshe Fejgin, Y. Beyth Keywords: Agenesis of corpus callosum; prenatal diagnosis Abstract: Four cases of complete (three) and partial (one) agenesis were evaluated ultrasonographically. The frontal lobe/biparietal diameter ratio were evaluated in 113 normal fetuses and compared with those ratios in fetuses with corpus callosum agenesis. In the presence of the classic ultrasonographic features of agenesis of the corpus callosum, frontal lobe shortening, along with absence of the cavum septi pellucidi, might contribute to the diagnosis of complete agenesis of the corpus callosum and distinguish it from partial agenesis. (AM J OBSTET GYNECOL 1996;174:877-8.) Author Affiliation: Kfar-Saba, Israel Article History: Received 4 August 1995; Accepted 9 August 1995 Article Note: (footnote) [star] From the Department of Obstetrics and Gynecology, Sapir Medical Center., [star][star] Reprint requests: Yaron Zalel, MD, Department of Obstetrics and Gynecology, Sapir Medical Center, Kfar-Saba, 44281 Israel., a 0002-9378/96 $5.00 + 0 6/1/68438