Abstract
Corpus callosum is an important commissure, which connects the right and left hemispheres. Corpus callosum agenesis is a relatively uncommon malformation of the brain in our society of KSA. Its diagnosis is based on brain imaging and sometimes asymptomatic. The Following case report highlights a case of a newborn with ambiguous genitalia, associated with complete agenesis of the corpus callosum discovered at birth, with wide cisterna magna and small cerebellum, multiple congenital anomalies, and dysmorphic features.