[Turner's syndrome phenotype and spontaneous menstruation. Apropos of a case of 45 X syndrome].

The authors report a new case where a women of 28 years of age started periods spontaneously in spite of having the phenotype of Turner's syndrome and a 45 X karyotype in her lymphocytes and fibroblasts. When she had been stimulated with Clomiphene it was even possible to prove that she had ovulated and produced a functional corpus luteum. No Barr bodies were to be found in the cells from her ovaries and the karotype did not suggest a mosaic which would normally explain this sort of state. All the same, it is difficult to see how any part of the basic follicles can persist in cases of monosomy 45 X if there is no mosaicism.