Congenital Macrocephaly

**Semantic type:** Congenital Abnormality|Disease or Syndrome

**Definition:** An abnormal enlargement of the head, including the scalp, the cranial bone, and the contents of the cranium that is present at the time of birth; representative examples include tuberous sclerosis, neurofibromatosis, and various other genetic causes.

**Synonyms:** - Congenital Megacephaly - Congenital Megalocephaly