[Clinico-morphological analysis of spontaneous testicular tumors in dogs].

The study of 83 cases of testicular tumours in dogs based on the International Histological Classification of tumours in domestic animals (WHO) has shown that these tumours can be divided into three groups: sex cord-stromal tumours (43.3%), germ cell tumours (36.3%) and multiple primary tumours (20.4%). The latter consisted of germ cell and sex cord-stromal components. Choriocarcinomas and teratomas were not found. By morphological criteria and histogenesis testicular tumours in dogs have shown to be very similar to analogous tumours in humans.