A sebaceous cyst
is a closed sac under the skin filled with a cheese-like or oily material.
Sebaceous cysts most often arise from swollen hair follicles. Skin trauma
can also induce a cyst to form. A sac of cells is created into which a protein called keratin is secreted.
These cysts are usually found on the face, neck, and trunk. They are usually slow- growing, painless, freely movable lumps beneath the skin. Occasionally, however, a cyst will become inflamed and tender.
Treatment of sebaceous cyst is surgical removal.
Surgical excision of a sebaceous cyst is a simple procedure to completely remove the sac and its contents