Many people have lumps on their body for years and are not aware what those lumps contain inside until they visit a dermatologist. Dr. Sandra Lee is a dermatologist and is known as Dr. Pimple Pooper because she treats pimples for years. But one day, an elderly woman came to see her as she had a giant pimple on her back. At the beginning, Dr. Lee thought that she had giant blackhead. But it wasn’t. It was actually epidermoid cyst also known as keratin cyst. This cyst is round and it really looks like blackhead. Dr. Lee recorded the cyst removal and the video was viewed more than 1.6 million times on YouTube.