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Types of Cancer > OncoLink Vet > Veterinary Oncology > Tumors
Ceruminous Gland Tumors
Supported by the Savannah and Barry French Poodle Memorial Fund
Affiliation:
University of Pennsylvania School of Veterinary Medicine
Last Modified: August 21, 2005
Michael H. Goldschmidt, MSc, BVMS, MRCVS, Diplomate ACVP Professor and Head, Laboratory of Pathology and Toxicology Chief, Surgical Pathology Department of Pathobiology
Frances S. Shofer, PhD, Adjunct Associate Professor of Epidemiology and Biostatistics
Introduction
Ceruminous glands: These are modified apocrine glands found in the external ear canal that produce a brown waxy material. The glands consist of a secretory component surrounded by myoepithelial cells, and a duct which opens directly onto the epidermal surface of the external ear canal.
Benign Ceruminous Tumors
Ceruminous Adenoma
Definition—Ceruminous gland adenoma: A simple benign tumor with differentiation to ceruminous secretory epithelium.
Definition—Complex and mixed ceruminous gland adenoma: Complex (compound) ceruminous tumors have proliferation of glandular and myoepithelial cells. Mixed ceruminous tumors show a metaplastic change of the myoepithelium to cartilage or bone.