Deletion of long arms of chromosome 13.

The case is presented of a girl with the banded karyotype 46,XX,del(13)(q22) and a phenotype of severe mental and growth deficiency, mongoloid slant of palpebral fissures, ptosis, hypertelorism, microcephaly, microstomia, micrognathia, nystagmus, gothic palate, uvula fissa, low-set malformed ears, short fingers, pedes excavati, dislocation of hips and diabetes insipidis. Both parents have a normal phenotype and karyotype.