Medically reviewed by William Truswell, MD A lump behind the ear can have many possible causes. The most common include ...

Ovarian cysts are fluid-filled sacs that can form in or on your ovaries. Some cyst types can become large in size and may require surgery. Most ovarian cysts are benign (noncancerous). They ...

Complications of complex ovarian cysts may include the following: If a cyst grows too large, it can press against the bladder, causing a frequent need to urinate. An enlarged cyst may also push ...