Primary ovarian neoplasms from 22 cats were described. A single cat had tumors of epithelial origin—bilateral cystadenomas. Seven animals had germ cell tumors—dysgerminomas or teratomas; two cats had bilateral tumors. Fourteen animals had neoplasms of sex cord-stromal origin—granulosa cell tumors and interstitial gland tumors. Four cats with granulosa cell tumors had clinical evidence of hormonal disturbance.
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