Abstract
Twenty patients associated with sex anomalies were screened for chromosome abnormalities. Among them, 13 cases were found to be chromosomally abnormal. They are 3 cases of Klinefelter's syndrome with a regular XXY sex-mechanism, 2 cases of Klinefelter's syndrome showing XY/XXY and XX/XXY cell mosaicisms respectively, 1 case of Klinefelter's syndrome with an XXXY (long) sex-mechanism, 1 case of male pseudo-hermaphrodite with an XO/XY mosaicism, 1 case of primary amenorrhoea with an XO/XX mosaicism, and 5 males with an unusually long Y chromosome. The remaining 7 cases did not deviate from a normal complement, being 46, XX in females and 46, XY in males.
