Nowadays, with the changing climatic conditions due to global warming, the seasonal estrus cycle in cats has reached the point where it can spread almost throughout the year. This situation has brought many problems with it. Mammary tumors and mammary gland hyperplasia are the most common cases in mammarytissue, which occur as a result of medical interventions for reproductive control. In this review, information about the etiology, pathogenesis and clinical detectionandespecially current and succeed treatment options of mammary gland hyperplasia in cats is given.

A 7-years-old female Golden Retriever dog was presented to the clinic with a multilobular mass protruding from the vulva. On clinical examination, the mass was observed on the circumference of the vaginal canal. The owner reported not noticing a pro-estrous bleeding for a year. On vaginal cytology, parabasal cells, intermediate cells, neutrophil infiltration and clumps of bacteria were determined. Mild anemia, severe leukocytosis and high MPV value were detected. As a treatment, vaginal mass was totally extirpated by partial vaginectomy and subsequently ovariohysterectomy were performed to avoid the re-occurrence of the vaginal tumor. Both vaginal mass and ovariohysterectomy materials were histopatologically examined. Benign tumors were diagnosed which were vaginal leiomyoma and bilateral ovarian luteoma. It was concluded that histopathological analysis of every surgically removed tissue should be performed in order not to miss a tumorous condition even if it does not show any symptoms.