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Updated: Sep 28, 2026
Murine Prostate Micro-dissection and Surgical Castration
Published on: May 11, 2016
Castration for treatment of perianal gland neoplasms in the dog
Abstract:
Neoplasms of the perianal gland are common in the dog, particularly the male. Adenomas of the gland develop about 4.5 times more often than do carcinomas of the gland. The adenoma is hormone dependent; thus, castration without excision of the tumor has been successful in promoting regression without recurrence. Microscopic examination of the testes from dogs with perianal gland neoplasms has revealed 1 in 10 with tubular atrophy and 1 in 3 with testicular neoplasia. Interstitial cell tumors have been seen more often than other cell types of testis tumors.
Insights
Perianal gland tumors are common in male dogs, with adenomas being more frequent than carcinomas. Castration can lead to regression of hormone-dependent adenomas without recurrence.
Area of Science:
- Veterinary Oncology
- Canine Pathology
Background:
- Perianal gland neoplasms are frequently diagnosed in dogs, especially males.
- Adenomas are significantly more common than carcinomas, occurring approximately 4.5 times more often.
Purpose of the Study:
- To investigate the hormonal dependency of canine perianal gland adenomas.
- To assess the efficacy of castration in managing these tumors.
- To examine testicular pathology in dogs with perianal gland neoplasms.
Main Methods:
- Clinical observation of tumor regression post-castration.
- Histopathological examination of perianal gland tumors.
- Microscopic analysis of testicular tissues.
Main Results:
- Castration alone promoted regression and prevented recurrence in hormone-dependent adenomas.
- Testicular abnormalities were noted in a significant portion of affected dogs.
- Tubular atrophy was present in 10% of testes, and testicular neoplasia in 33%.
Conclusions:
- Canine perianal gland adenomas are hormone-dependent and responsive to castration.
- Testicular neoplasia, particularly interstitial cell tumors, is a common concurrent finding in dogs with perianal gland tumors.
