The Leydig cell of the human testis —A new member of the diffuse neuroendocrine system

1993 ◽  
Vol 271 (3) ◽  
pp. 429-439 ◽  
Author(s):  
M. S. Davidoff ◽  
W. Schulze ◽  
R. Middendorff ◽  
A. -F. Holstein
Keyword(s):  
Leydig Cell ◽  
Neuroendocrine System ◽  
Human Testis ◽  
Diffuse Neuroendocrine System

The adipose tissue: a new member of the diffuse neuroendocrine system?

Adipobiology ◽  
2009 ◽  
Vol 1 (0) ◽  
pp. 87 ◽  
Author(s):  
George N. Chaldakov ◽  
Marco Fiore ◽  
Gorana Rančić ◽  
Anton B. Tonchev ◽  
Mariyana G. Hristova ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Neuroendocrine System ◽  
Diffuse Neuroendocrine System

Ultrastructural Features of Leydig Cell Hyperplasia Due to an hCG-Producing Testicular Tumor

1982 ◽  
Vol 40 ◽  
pp. 212-213
Author(s):  
S. L. Asa ◽  
T. A. Bayley ◽  
E. Horvath ◽  
K. Kovacs
Keyword(s):  
Laboratory Investigation ◽  
Chorionic Gonadotropin ◽  
Leydig Cell ◽  
Human Chorionic Gonadotropin ◽  
Testicular Tumor ◽  
Testicular Neoplasms ◽  
Medical Attention ◽  
Human Testis ◽  
Cell Hyperplasia ◽  
Chronic Stimulation

Leydig cell clusters in the adult human testis are known to enlarge during chronic stimulation with excess LH as in Klinefelter's syndrome or following administration of exogenous human chorionic gonadotropin (hCG). However, the ultrastructural features of this hyperplasia, to our knowledge, have not been reported in association with testicular neoplasms producing hCG.We report the case of a 21-year-old man who sought medical attention because of gynecomastia. Laboratory investigation revealed a marked increase in serum hCG and elevated a-fetoprotein. A testicular mass was palpable on examination and the patient underwent orchiectomy.

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