A cyst is a small lump filled with fluid that usually forms under the skin. They are very common and usually have no symptoms or side effects. At ACS we surgically remove many types of cysts right here in the office. Some cysts, like Pilar cysts, may require patients to be intravenously sedated, but most use a local anesthesia. Dr. Agnihotri uses a special stitching technique to make the removal virtually scarless.