Ceruminous gland adenoma in a dog: A histopathological examination

Abstract

Pathological diagnosis of a surgically excised ceruminous adenoma in a 5 year old male spitz dog was described in the present study. Animal was presented with the history of a nodular growth in the ear canal. Clinical examination revealed the presence of nodular growth partially obstructing the lumen of the external ear canal. The nodule was excised under general anaesthesia. Histopathologically, the nodule revealed an intact skin with un-encapsulated glandular growth that had a polypoid pattern with cystic changes. The glandular cuboidal cells lining the cyst were supported by a moderate fibro-vascularstroma. Diffusely, lumen of some glands was filled with pale homogeneous eosinophilic material along with few sloughed off epithelial cells, degenerate neutrophils and necrotic debri. Mitotic figures were not discernible. The gross and histopathological features were characteristic of papillary cyst adenoma of the ceruminous gland.