[Genetic syndromes that mimic congenital infections: Report of 2 cases.]

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Abstract

Genetic syndromes that mimic congenital infections must be recognized because of the associated risk of recurrence. We describe a male infant who was born with the association of intra-uterine growth retardation, microcephaly, intracranial calcifications, white matter abnormalities, microphtalmy, bilateral cataract, and hearing loss. Congenital cytomegalovirus (CMV) infection was suspected, but serologic CMV markers were not decisive (IgG+/IgM-). His half-sister (same father) presented a similar phenotype. Therefore, the diagnosis of congenital CMV infection was questioned and a genetic hypothesis was suggested. In 1983, Baraitser et al. first described two brothers with microcephaly and intracranial calcifications and negative TORCH analysis. Later, a number of authors reported children in whom detailed investigation failed to objectively confirm an intra-uterine infective agent. Clinical features include severe postnatal microcephaly, seizures, and pronounced developmental arrest. These cases have been considered to define a distinct autosomal recessive disorder first named pseudo-Torch syndrome. The family described herein is different from the cases previously described with a suspected autosomal dominant inheritance, severe ophtalmological abnormalities, and unusual brain imaging.

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