A Fibrosarcoma Case with Poor Prognosis in a Golden Retriever Breed Dog

A ten-year-old male, golden retriever breed dog was brought to the surgical clinic with a sign of swelling in the left pelvic region. the tumor suspected mass, located in the upper left of the pelvis, was totally excised. the mass of the tumor was approximately 1570 g and the size was 20x15x7 cm. histopathological examination of the tumor revealed fibrosarcoma. chemotherapy was initiated 1 week after the operation by using of vincristine sulphate 3 times per week. recurrence started again in the same region about two weeks after the last chemotherapy. approximately 4 weeks later, the second surgical operation was performed because the mass grow up again. patient died 8 hours after the last operation. in this case report, a case of fibrosarcoma with poor prognosis that did not respond to tumor surgery and chemotherapeutic treatment is presented.