Cysts, abscesses and lipomas all have one common feature: they cause a lump or bump on the skin. All three are very common and I literally remove a hundred or more lipomas and sebaceous cysts a year.

What causes an inclusion cyst to come to a head and rupture, and what effect does this have?—JUDIE HARTLEY, CRNP, BSN, Warren, Ohio An epidermal inclusion cyst or epidermoid cyst is lined with ...

Sebaceous cysts can range from a half-inch to almost two inches in length and present as a firm, defined or warty-textured lump. They may become crusty and ooze or bleed if bumped, then scab over.

There was a subconjunctival inclusion cyst with a white fluid level in the superonasal quadrant (Figure 1a). A white retinal detachment resembling the fluid in the cyst (Figure 1b) was seen.