Abstract
Objective: Mammary gland tumors are the most prevalent neoplasm in bitches. This study focuses on the diagnosis and surgical treatment of gland tumors in a bitch that has not been spayed.
Materials and Methods: A 4-year-old female dog weighing 8 kg with a history of big, firm swelling around the left third and fourth mammary glands was presented. This tumor grew quickly and doubled in size in just a few weeks. After a thorough clinical evaluation, it became obvious that this was a case of a tumor of the mammary gland. The tumor mass wassurgically excised from the mammary glands (mastectomy) after the appropriate restraint, aseptic procedure, and anesthetic protocol. A histological examination of the tumor tissue was carried out to confirm the diagnosis.
Results: The dog healed up satisfactorily after surgery, and there was no sign of complications or recurrence during a 2-year observation. Following surgical manipulation, a positive clinical result was achieved. After 2 years, there was no evidence of tumor recurrence.
Conclusion: Although most canine glandular tumors develop in the mammary glands, early detection and proper surgery may be the most effective solution.

Key words: Mammary gland tumor; histopathology; mastectomy; canine