“…Different from chromosome 3, this chromosome has frequently been described in anomalies either by the presence of duplication of its short arm or by participating in translocations [Nielsen et al, 1986;Borgaonkar, 1991;Palmer et al, 1976;Bou6 and Gallano, 19841. Some cases of deletions of the short arm of chromosome 3 have been published [Hertz et al, 1988;Short et al, 1986;Sinchong et al, 1981;Naritomi et al, 1988;Kogame and Kudo, 1979;Wyandt et al, 19801. Clinical delineations of the 3p proximal deletion syndrome have also been published [Neri et al, 1984;Naritomi et al, 19881. Very few cases of t(3;20) have been described [Archidiacono et al, 1979;De Arce et al, 1986;Nielsen et al, 1986;Jacobs et al, 1974;Stoll and Levy, 19741. Most of these were identified through the presence of a partial trisomy in families with carriers of the balanced translocation.…”