A sebaceous cyst—also known as a steatocystoma—is a fluid-filled bump under your skin that develops when the sebaceous (oil) ...

Simple liver cysts are common, and even when they are large, they do not need to be removed unless they cause symptoms.

I had one removed from my head when I was about eight-years-old and didn't have another until two years ago. Now I have three that have come up on my head beneath my hair.

If an ovarian cyst is left untreated, it will usually resolve on its own. However, a solid or partially solid cyst may need to be evaluated by a lab to make sure it isn’t cancerous. While most ovarian ...