Management of Multiple Perianal Apocrine Hamartomas in a Poodle Dog Using Carbon Dioxide Laser.

Hamartoma is characterized by the abnormal proliferation of cells and tissues within the originating organ. Apocrine hamartoma (AH) affecting the skin, especially in the perianal area, has not yet been reported in dogs. A 7-year-old neutered male Poodle presented with multiple perianal papules and pruritus. Histopathological examination revealed significant enlargement of the apocrine glands and ducts, accompanied by mononuclear cell infiltration that extended into the subcutis. Given the location, number, depth and extent of the lesion, CO2 laser ablation was chosen over surgical resection. Complete recovery was observed at the surgical site 1 month after treatment, and pruritic symptoms were markedly reduced. CO2 laser ablation is a relatively safe and effective palliative treatment for perianal AH in dogs.