DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Recurrent sebaceous cyst. Close-up of a small flesh-coloured lump on an old scar. This is a sebaceous cyst. It forms when the sebaceous gland is blocked. The gland enlarges as it fills with sebum (oily substance that lubricates & waterproofs skin) forming a nodule under the skin. Although harmless, sebaceous cysts may grow very large, or become infected & painful. Treatment involves removing the entire cyst & cyst wall, with a follow-up course of antibiotics (anti- bacterial drugs).
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