[A case of Cornelia de Lange syndrome with retentio testis].

A 6-year-old boy whose chief complaint was retentio testis was referred to our clinic. He had mental retardation, shortness of stature of prenatal onset, retarded growth, microbrachycephaly, bushy eyebrows, long eyelashes, low-set ears and micromelia, and was diagnosed to have Cornelia de Lange syndrome. As in most cases of Cornelia de Lange syndrome the cause of our case was not clear, and chromosome analysis showed a 46,XY constitution. In our case, we performed bilateral orchidopexy for retentio testis because of the problem of fertility and the danger of malignancy. Cornelia de Lange syndrome is rare and the urologic literature dealing with this disease has never been reported in Japan. The clinical features of this disease are discussed in the present report.