a hereditary defect which results in the abnormal growth of tissues supporting the brain and hydrocephalus which leads to an enlarged head.

MACROCEPHALY: "Macrocephaly is a condition where the tissues supporting and making up the head continue to grow, thereby producing enlarged heads."
Cite this page: N., Pam M.S., "MACROCEPHALY," in, April 7, 2013, (accessed October 19, 2021).