Dermatologist Dr. Timothy Jochen demonstrates a cyst excision on a patient that has reoccurring cysts. Learn more about cysts, click here.
A cyst is an abnormal closed, hollow, and membranous sac filled with air, bodily fluids, keratin, and/or pus if the cyst has ever been infected. There are many different kinds of cysts, almost all of which are benign and do not require medical intervention unless they rupture, become infected, are very large, or are painful.