Baharak Akhtardanesh - -
Omid Azari - -
Darioush Vosough - -

Case Description- A seven-year-old male donkey was admitted with a history of left scrotal swelling with ulcerating wound since ۲ years. Clinical Findings- The left scrotum was painful. There was ulcerating and hypergranulating wound discharging bloody discharge. The wall of the scrotum was found thick and infiltratedwith soft slimy non-capsulated and lobulated fibrous tissue masses. The left testis was found small and atrophied. Pathological studies showed the focal areas of myxomatus degeneration with spindle shaped and stillate connective tissue cells. The epitheluim of seminiferous tubules of left testis appeared denuded with loss of spermatocytes. In addition, some tubules appeared collapsed and have wave like hyaline thickened. Treatment and outcome- Surgical castration was done. Daily excerise and systemic antibiotics were recommended. The animal showed recovery within ۱۵ days without recurrent. Clinical Relevence- Peritesticular fibromyxoma should be considered in the diagnosis and treatment of scrotal swelling in the equines. Surgical castration was succeful in the treatment without recurrency.