An epidermoid cyst is a sac lined with epidermis, filled with keratin. The contents are not the problem — the wall is.
The cyst wall continuously produces keratin into its own cavity. A central punctum is often visible. They are commonly, and inaccurately, called sebaceous cysts; true sebaceous cysts (steatocystomas) are a different entity.
Squeezing empties the cavity and leaves the lining intact, so it refills. Incision and drainage relieves pressure but does not resolve the cyst. Only removal of the wall does.
Size, site, whether it is currently inflamed or infected, previous rupture, and scarring from earlier attempts.
Excision of the intact sac. An acutely inflamed cyst is usually settled first, because operating through inflamed tissue increases the chance of an incomplete removal and a worse scar.
A cyst that is red, hot, painful or discharging is treated as inflammation first. Cosmetic considerations wait.
An epidermoid cyst is a sac lined with epidermis, filled with keratin. The contents are not the problem — the wall is.
Squeezing empties the cavity and leaves the lining intact, so it refills. Incision and drainage relieves pressure but does not resolve the cyst. Only removal of the wall does.
Size, site, whether it is currently inflamed or infected, previous rupture, and scarring from earlier attempts.
A cyst that is red, hot, painful or discharging is treated as inflammation first. Cosmetic considerations wait.
Every assessment is carried out personally by Dr Sin Yong, Medical Director. 9 Scotts Road, #12-01 Pacific Plaza.
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