A cyst is a sac of tissue containing fluid or air that can form in many areas of the body. Cysts often do not need to be removed unless they are causing pain or other problems. There are several ...

DEAR DR. ROACH: I was diagnosed with several liver cysts over 15 years ago. My primary doctor and I follow the growth of the cysts by ultrasound, and one is increasing in size. We did an MRI with and ...