Bilateral Carcinoma of the Breast in a Patient with Klinefelter's Syndrome

Abstract
A case of a 69-yr-old Negro male displaying bilateral carcinoma of the breast and Klinefelter's syndrome (XXY configuration) is presented. The patient had normal urinary estrogen excretion, decreased 17-ketosteroid excretion, normal 17-hydroxycorticosteroid excretion, and increased gonadotropin excretion. Chromosomal studies and autopsy findings are included in the report.