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MEADE KENNETH W. MD; WACHTEL, STEPHEN S. PhD; DAVIS, JOHN R. MD; LIGHTNER, ELMER S. MD
Obstetrics & Gynecology: May 1981
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Androgen excess, found occasionally in gonadal dysgenesis, may be associated with hilus cell hyperplasia within the gonadal streaks. This report describes a phenotypic female with Turner syndrome, clitoromegaly, hilus cell hyperplasia, and a gonadal-to-peripheral venous step-down gradient for testosterone, androstenedione, and estradiol. Cytogenetic analysis of cells from peripheral blood and both streak gonads revealed a mosaic karyotype, 45,X/46,X,iso(X). The isochromosome was a nonfused dicentric type (pter ➝ q2105 ➝ pter). Despite absence of the Y chromosome, serologic analysis revealed the presence of H-Y antigen, thereby suggesting occult Y chromosomal function in the patient's gonads.

© 1981 The American College of Obstetricians and Gynecologists