A 24-year-old member asked:
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diagnosed with absence of the septum pellucidum/hydrocephalus at age 24. i have brain mri pic. congenital or acquired? sod symptoms. no link please.

1 doctor answer
Dr. Johanna Fricke
49 years experience Developmental and Behavioral Pediatrics
Congenital, either : from agenesis of septal leaflets at 7-8 weeks gestation when optic nerves & other structures involved in septo-optic dysplasia (SOD) also form, or from destruction of the septum by enlarged ventricles caused by brain malformations that obstruct flow of cerebrospinal fluid, which begins in the 4th ventricle ~ 12 weeks. SOD is caused by prenatal alcohol/drug use, mutant genes, etc.
Answered on Dec 3, 2015
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