Anywhere on the body.
A cyst is a sac that forms in the body — it can form in bones, organs, or tissues. The cysts that form in the skin are essentially a pocket that is filled with skin cells, bacteria, and/or pus. They vary dramatically in size and can be found anywhere on the body. As time goes by, more and more skin cells are trapped in the cyst, causing the cyst to grow larger.
The removal procedure is by surgical excision and may leave a small scar.