How common are mucous cysts, and why do they form? Mucous cysts, also known as mucoceles, are quite common in the general population, usually occurring on the lower lip.

This can result in retention of mucus within the duct (mucous retention cyst) or, more commonly, the formation of a pseudocyst in the submucosa (mucous extravasation cyst). Differential diagnoses ...

Depending on the location of the cyst, various names have been used to describe the mass. A ganglion adjacent to the nail of the finger is called a mucous cyst, and one behind the knee is called a ...