We describe here 6 cases of 18-trisomy syndrome and a possible seventh (Fig. 1). Table 1 lists the most frequent anomalies found in these patients. Case 1. M.C. was the 3d child of a Caucasian mother ...

Japanese researchers have confirmed the second case known to science of a chimpanzee born with trisomy 22, a chromosomal defect similar to that of Down syndrome (or trisomy 21) in humans. The report1 ...

Among 19 autopsied cases of 17–18 trisomy syndrome, 10 confirmed by cytogenetic studies, nine diagnosed on the basis of phenotypic characteristics, seven cases of neonatal hepatitis were found, ...