Dysgenesis of the Corpus Callosum
Dysgenesis means that the corpus callosum developed but developed in some incomplete or malformed way. Thus, partial ACC and hypoplasia of the corpus callosum would be forms of dysgenesis, as would any other form of inadequate callosal development. Dysgenesis is a broad term for any malformation of the corpus callosum that is not a complete absence (agenesis).