[The XYY syndrome (brief clinico-morphologic characteristics)].

The authors conducted a cytogenetical, anthropological and clinical study of 5 patients with aneuromia by Y chromosome. A cytogenetical study of 4 patients revealed Kariotype 47, XYY, in one-mosaicism of the 46, XY/47, XYY type. All the patients had drive pathology, and a retarded intellect compared to normal individuals. According to the morphological signs the patients had the following common traits: an increased variability of the mandibular part of the face, a high nose bridge, acne vulgaris. It was also demonstrated that there was a tendency toward a longer body, length of hands. In 3 tall patients there was eunuchoid body built. In one of the patients the structure of the molars corresponded to such of fossil hominids.