Tumors of the Ear Canal in Dogs

Tumors may develop from any of the structures lining or supporting the ear canal, including the outer layer of skin, the glands that produce earwax and oil, or any of the bones, connective tissues, muscles, or middle layers of the skin. Tumors of the external ear canal and pinna are more common than tumors of the middle or inner ear. Cocker Spaniels are more likely to have ear canal tumors than other breeds of dogs. Middle-aged dogs are more likely to have benign ear

Inflammation of the middle ear structures (otitis media) is usually caused by an extension of infection from the external ear canal or by penetration of the eardrum by a foreign object. The spread of infection through the bloodstream to these areas is also possible, but it is rare. Inflammation of the middle ear may lead to inflammation of the inner ear structures (otitis interna). This ca

The tubular portion of the outer ear that carries sound to the eardrum is called the ear canal. The most common disorder of the ear canal in dogs is called otitis externa. This condition occurs when the layer of cells that line the external ear canal becomes inflamed. Signs include headshaking, odor, redness of the skin, swelling, scratching, increased discharge, and scaly skin. The ear canal may be painful or itchy depending on the cause or duration of the condition

A variety of skin conditions affect the outside part of the ear, called the pinna. Most conditions cause tissue changes elsewhere as well. Rarely, a disease affects the outer ear alone or affects it first. As with all skin conditions, a diagnosis is best made when combined with the results of a thorough history, a complete physical and skin examination, and carefully selected diagnostic tests. Insects and parasites commonly cause inf

Deafness may be congenital (present at birth) or acquired as a result of infection, trauma, or degeneration of the cochlea (the organ of hearing). Deafness present at birth can be inherited or result from toxic or viral damage to the developing unborn puppy. Merle and white coat colors are associated with deafness at birth in dogs and other animals. Dog breeds commonly affected include the Dalmatian, Bull Terrier, Australian Heeler, Catahoula, En

The ear is an organ of hearing and an organ of balance. It consists of the outer, middle, and inner ear. The outer ear includes the pinna (the part you see that is made of cartilage and covered by skin, fur, or hair) and the ear canal. The pinna is shaped to capture sound waves and funnel them through the ear canal to the eardrum. In dogs, the pinnae are mobile and can move independently of each other. The size an