Abstract
A case of metastatic prostatic adenocarcinoma with concurrent Sertoli cell tumor is presented in an old, miniature Schnauzer dog. The prostatic neoplasm was highly anaplastic and had metastasized widely. Clinical signs were compatible with increased estrogen production. It is interesting to note that the prostatic carcinoma, usually considered to be androgen dependent, developed and metastasized, despite the presence of apparently increased estrogen levels.
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