These are common benign tumors found more often in older dogs, particularly Boston Terriers, Poodles, and Cocker Spaniels. The average age of dogs with sebaceous adenomas is 9 - 10 years.
These tumors tend to occur on the eyelids and limbs. They may be single or multiple, usually less than 1 inch (25cm) across, and appear as smooth, lobulated growths on a narrow base or stem. The surface of the tumor is hairless and may be ulcerated.
Sebaceous adenomas arise from the oil-producing sebaceous glands in the skin.
Occasionally, a sebaceous adenoma becomes malignant (becoming a sebaceous adenocarcinoma). Suspect malignancy if the tumor is larger than 1 inch, had an ulcerated surface, and is growing rapidly.
Small tumors do not need to be removed unless they are causing a problem. Large adenomas should be removed.
There is no prevention for this condtion.
Please contact your veterinarian if you have questions regarding this condition.
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