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A cytogenetic study of familial deafness.

1969; BMJ; Volume: 6; Issue: 3 Linguagem: Inglês

10.1136/jmg.6.3.298

1468-6244

Hanna Dar, Susann Winter,

Hearing Impairment and Communication

Grimaud, Gilgenkrantz, and Bemol (1967) re- ported identical chromosomal abnormalities in two children with isolated deafness, and discussed the possible relation between the observed anomalies and particular types of hearing defect.Hearing impairment is sometimes present in syndromes associated with chromosomal abnormalities: about half of a group of patients with ovarian dysgenesis and chromosomal abnormalities were deaf (Engel and Forbes, 1965), and a high per- centage of patients with Down's syndrome were also found to have impaired hearing (Francois, Matton- Van Leuven, and Kluyskens, 1967).The heterogeneous group of isolated hereditary deafness includes at least 9 entities (Mengel et al.,