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 ...

Among children born with the chromosome disorders trisomy 13 or 18 in Ontario, Canada, early death was the most common outcome, but 10 percent to 13 percent survived for 10 years, according to a study ...