Overview of Sebaceous Cysts in Dogs
A sebaceous cyst is a small sac containing an accumulation of secretions produced by the sebaceous glands that can occur in dogs. Sebaceous cysts are also known as epidermoid cysts, epidermal inclusion cysts, epidermal cysts, and wens.
The sebaceous glands produce an oily substance called sebum, which lubricates the skin. The ducts of the sebaceous glands empty into hair follicles. The development of sebaceous cysts is thought to arise from an obstruction of the follicles, leading to abnormal accumulations of sebum.
Sebaceous cysts are common in dogs. There are no breed, age or sex predilections with respect to formation of the cysts. There is no significant impact on your dog, as these are benign, non-painful growths.
What to Watch For
Signs of a Sebaceous Cysts in Dogs include:
Diagnostic Tests for Sebaceous Cysts in Dogs
Treatment of Sebaceous Cysts in Dogs
In most cases no treatment is necessary. If the decision is made to biopsy the cyst, complete surgical removal is usually performed. This is curative.
At home, monitor the cyst for changes in size or evidence of irritation. Although these are benign growths, fine needle aspiration does not always provide a conclusive diagnosis. For this reason, rapidly enlarging masses should be surgically removed and biopsied to ensure there is no evidence of malignancy (cancer).