A retrospective compilation of karyotypeanalysis of slides stained with Band G was carried out by optical microscopy with materials of 428 abortion products referred for study.
RESULTS:
There were 145 normal results (33.9 percent) and 237 abnormal results (55.4 percent). In 46 samples there was no cellgrowth (10.7 percent). Numerical abnormalities were the most frequent, especially trisomy 16 (41 cases), triplodia (27 cases), monosomy X (26 cases), tetraploidy (13 cases) and trisomy 15 (13 cases).