Resumo

DE LA GUARDIA-PENA, Odalis et al. Thymic hypoplasia in an infant with cystic fibrosis. Rev Cubana Hematol Inmunol Hemoter [online]. 2014, vol.30, n.1, pp. 74-80. ISSN 0864-0289.

Cystic fibrosis is the most common autosomal recessive disease in Caucasian populations; in Cuba, one in 5 000 newborns are affected. In 1989, the conductance regulator gene for cystic fibrosis transmembrane was cloned and its main mutation F508del was identified. Since then, over 1 300 different mutations in the gene have been described. The thymus is the primary organ of T cell maturation, is relatively large and very active at birth. DiGeorge syndrome, described in 1965, includes several birth defects and immune deficits, mainly of T cells by thymic hypoplasia. Currently, definitive, probable and possible criteria to diagnose the entity exist as well as reports of full and partial syndromes depending of symptoms present in the patient; nevertheless, severe thymic hypoplasia can be observed in patients without diagnosis of Di George. We report the case of a pediatric patient with diagnosis of cystic fibrosis by molecular studies identified as homozygous for the mutation F508del with severe thymic hypoplasia.

Palavras-chave : cystic fibrosis; thymic hypoplasia.

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