This image displays a hard, skin-colored cyst on the scalp. A pilar cyst is a benign cyst that must be surgically removed. This image displays a cyst on the neck that has ruptured and started to swell.
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Pilar Cyst  Information for adults

Picture of Pilar Cyst: This image displays a hard, skin-colored cyst on the scalp. Divider line
This image displays a hard, skin-colored cyst on the scalp.
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Overview
Pilar (trichilemmal) cysts, sometimes referred to as wens, are common fluid-filled growths (cysts) that form from hair follicles that are most often found on the scalp. The cysts are smooth and mobile, filled with keratin (a protein component found in hair, nails, and skin), and they may or may not be tender. Pilar cysts may run in families. Rarely, these cysts may grow more extensively and form rapidly multiplying (proliferating) pilar tumors (also called proliferating trichilemmal cysts), which are non-cancerous (benign) but may grow aggressively at the cyst site. Very rarely, pilar cysts can become cancerous.
Last Modified: 22 Dec 2008