Fanconi's anemia in infancy. Report of a case diagnosed in the pre-anemic stage.

A 6 1/2-month-old girl is described, in whom the diagnosis of Fanconi's anemia in the pre-anemic stage was made on the basis of the following findings: growth failure, microcephaly, modest epicanthal folds, pigment spots, and chromosomal breaks. 4 months later progressive bone marrow failure developed and dramatically evolved into pancytopenia refractory to therapy.