Leydig cell tumor: a case report with reference to its endocrinological features

We reported an adult case of Leydig cell tumor, which demonstrated an increase of serum estradiol (E2) and suppression of serum testosterone (T) before orchiectomy. The direct inhibitory action of the elevated E2 on the enzymes involved in steroidogenesis and the negative feedback action on luteiniz...

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Bibliographic Details
Published inEuropean urology Vol. 24; no. 2; p. 302
Main Authors Masumori, N, Kumamoto, Y, Itoh, N, Tsukamoto, T, Miyao, N, Koroku, M, Hirose, T, Takahashi, S
Format Journal Article
LanguageEnglish
Published Switzerland 1993
Subjects
Chorionic Gonadotropin
Clomiphene
Estradiol - blood
Follicle Stimulating Hormone - blood
Gonadotropin-Releasing Hormone
Hormones - blood
Humans
Leydig Cell Tumor - blood
Leydig Cell Tumor - pathology
Leydig Cell Tumor - surgery
Luteinizing Hormone - blood
Male
Middle Aged
Orchiectomy
Pituitary Function Tests
Testicular Neoplasms - blood
Testicular Neoplasms - pathology
Testicular Neoplasms - surgery
Testosterone - blood
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Summary:We reported an adult case of Leydig cell tumor, which demonstrated an increase of serum estradiol (E2) and suppression of serum testosterone (T) before orchiectomy. The direct inhibitory action of the elevated E2 on the enzymes involved in steroidogenesis and the negative feedback action on luteinizing hormone (LH) secretion of the E2 possibly caused the suppression of serum T. A human chorionic gonadotropin test before the operation revealed the elevation of T and E2, although the response was poor compared with that in normal subjects. However, the postoperative test showed no elevation of these hormones. This result may indicate that the Leydig cell tumor preserves a response to LH stimulation.
ISSN:0302-2838
DOI:10.1159/000474315