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ABSTRACT: We evaluated the in vitro steroidogenic potential of a benign Leydig cell tumor of the testis. Tumor tissue was found to secrete deoxycorticosterone, progesterone, 17 alpha-hydroxyprogesterone, estradiol and testosterone into the medium. No corticosterone or aldosterone was detected. The ratio of progesterone to 17 alpha-hydroxyprogesterone was 4:1, consistent with a partial enzymatic block of 17 alpha-hydroxylase. The finding of deoxycorticosterone indicates the presence of 21-hydroxylase activity within the tumor. The high local levels of estrogen produced by Leydig cell tumors may induce this enzyme system and, together with the elevated concentrations of progesterone serving as substrate, may provide a favorable hormonal milieu for extra-adrenal deoxycorticosterone production by these neoplasms.
The Journal of Urology 08/1986; 136(1):114-6. · 3.75 Impact Factor
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ABSTRACT: Acromegaly is an insidious disorder of somatic growth and metabolic derangements that results from the chronic hypersecretion of growth hormone (GH) in the adult. While its precise incidence in this country remains undocumented, a recent epidemiologic study of a stable population of 3.1 million in England suggested an annual incidence of approximately 0.3 cases per 100,000, with a prevalence of diagnosed cases approaching 4 per 100,000. In the majority of cases the diagnosis, once considered, is not difficult, although in recent years the spectrum of possible etiologies has been considerably broadened. As with most diseases, the problems of diagnosis arise with the more subtle or less classical examples of the syndrome. This review will briefly discuss the possible etiologies and clinical presentation of acromegaly, and then focus on the diagnosis and management of this potentially devastating disease.
Comprehensive Therapy 02/1986; 12(1):22-30.
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ABSTRACT: We report on a 12 1/2-year-old boy with bilateral testicular enlargement. After an extensive evaluation we eliminated precocious puberty, hypothyroidism, congenital adrenal hyperplasia, X-linked mental retardation and bilateral malignant testicular neoplasms from consideration. Diagnosis was benign macro-orchidism. The clinical and laboratory features of this condition are sufficiently distinct from the other causes of testicular enlargement to allow a diagnosis to be made without testicular biopsy or orchiectomy.
The Journal of Urology 05/1981; 125(4):589-91. · 3.75 Impact Factor
