Recognition of central nervous system (CNS) abnormalities by prenatal
imaging has awakened interest in fetal neuropathology, considered as a
terra incognita by most pathologists. The evaluation of fetal brains
implies a perfect knowledge of the timing and characteristics of the d
eveloping and changing nervous system? during gestation. Disorders of
the brain are now studied with special regard toward their cause analy
sis considering Setal, maternal, and placental pathology. Thus, with t
his new approach and the distinction between primary and secondary CNS
lesions, an effective genetic counselling has become a realistic goal
. Examining fetal blains has led on the other land, to the recognition
of distinct entitles and the identification of specific chromosomal a
nd/or gene(s) abnormalities.