Type of Benign tumor years years years years 1 Mature cystic teratoma 05 03 02 2 Serous Cystadenoma 03 03 11 04 3 Papillary cystadenofibroma 02 4 Sertoli
leydig cell tumor 01 5 Mucinous cystadenoma 03 6 Total 06 11 14 06 Age groups 51-60 >60 Sl no.
b) SF-1 is a good marker for steroidogenic tumors, including
Leydig cell tumors and Sertoli cell tumors, and it shows negativity in all GCTs; however, there is no published data on its expression in the other SCSTs.
Leydig cell tumors, not otherwise specified steroid cell tumors, not otherwise specified (NOS)
Virilizing stromal
Leydig cell tumor of the ovary in pregnancy-A Case Report.
Leydig cell tumor differs from Leydig cell hyperplasia by being solitary, whereas nodular Leydig cell hyperplasia is characteristically multifocal.
Leydig cell tumor of the testis associated with Klinefelter's syndrome and Osgood-Schlatter disease.
125) Most
Leydig cell tumors, but only a minority of Sertoli cell tumors, are positive for [alpha]-inhibin and calretinin.
In contrast, germ cell tumors are rarely (at most) observed in rodents, whereas spontaneous
Leydig cell tumors are extremely common in the F344/N rat.
Normal Leydig cells and spermatogonia of canine testicles express c-Kit in their cytoplasm, and canine
Leydig cell tumors express positive immunolabeling for c-Kit, whereas c-Kit labeling is negative for Sertoli cell tumors.
For example, the F344/N rat typically used by the NTP has high background incidences of testicular
Leydig cell tumors and mononuclear cell leukemia, along with unresolved issues about declining fertility, sporadic seizures, and chylothorax (accumulation of lymphatic fluid in the pleural cavity, which can result from lymphoma).
This group is composed of a variety of tumors including fibroma fibrothecoma, cystadenofibroma, Sertoli-and
Leydig cell tumors.
Half of these animals were infertile and had larger testes and a significantly increased incidence of
Leydig cell tumors in testes.
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