This is the gruesome moment Dr Sandra Lee (aka Pimple Popper) cuts open a giant cyst on a patient's arm and yanks out a ping pong ball sized lump. The bump has been growing for a cringe-inducing ...

Sebaceous cysts can range from a half-inch to almost two inches in length and present as a firm, defined or warty-textured lump. They may become crusty and ooze or bleed if bumped, then scab over.