Fig. 2

Example of brain abnormalities in a fetus at 25 weeks of gestation. Note the size reduction of the cerebellum with severe volume loss; the immaturity of sulcal pattern with slight underdevelopment of the frontal operculae for the gestational age, resulting in uncovering of the insula; the abnormalities of the corpus callosum that appears thin (in the trunk area) and short (with absence of the genu)