Tumors of the Testicles in Dogs

Older male dogs are prone to developing testicular tumors.

Tumors affecting the testicles are one of the most common tumors found in older, un-neutered male dogs. Testicular tumors are easily recognizable for both owner and veterinarian; leading to quick diagnosis and treatment.

Causes

Unfortunately, testicular tumors in dogs are idiopathic---meaning the cause is unknown. However, dogs who have an undescended testicle seem to be at a greater risk of developing a testicular tumor.

Symptoms

Common symptoms of a canine testicular tumor include an enlarged testicle, changes in the skin such has hyperpigmentation (darkening of the skin), anemia, swelling and feminization--the male dog takes on female qualities, such as urinating in the female position.

Diagnosis

Diagnosing testicular tumors in dogs involves a physical exam, blood tests, a biochemistry profile, urinalysis, X-rays, ultrasounds and a biopsy of the affected tissue.

Treatment

Because of their location, testicular tumors are easy to treat. Simply by castrating (neutering) the dog, the tumor is often removed. In cases where metastasis (spread of the cancer) has occurred, chemotherapy or radiation therapy may be beneficial.

Prognosis

Dogs with testicular cancer have a good prognosis because the vast majority of testicular tumors are benign or metastasis did not occur.

References

• PetEducation: Testicular Tumors in Dogs
• Cancer of the Testicles in Dogs
• PetMD: Testicular Tumor in Dogs