Dr. Pimple Popper squeezed a man's bulbous 'goose egg' chest cyst and cut it open to reveal 'oatmeal'

• Dr. Pimple Popper treated a man with a cyst on his chest, squeezing out the entire growth at once.
• Cysts are skin cells trapped under the skin in a thin sac. They're non-cancerous but can feel painful.
• After the procedure, Dr. Pimple Popper cut the sac open to reveal an oatmeal-like substance.

As a seasoned dermatologist, Dr. Pimple Popper isn't easily surprised by the skin conditions her patients bring to the operating table.

But in an April 2 YouTube video Dr. Pimple Popper shared on YouTube, one man's chest growth initially fooled her.

At first, Dr. Pimple Popper, whose real name is Dr. Sandra Lee, thought the apple-sized growth was a lipoma.

Lipomas are fat-filled growths that sit between a person's muscle layer and skin layer. Typically, lipomas grow slowly and are fairly small, about 2 inches in diameter, according to the Mayo Clinic.

But after injecting the lump with a numbing solution and cutting through its center with a surgical blade, she revealed a white sac, indicating a cyst. Lipomas, which are made up of fat, tend to be more lumpy, yellow, and amorphous.

"It's like an egg under here. A goose egg!" Lee said of the bulbous white growth as she used scissors to widen the incision.

Once the incision was about five inches wide, Dr. Pimple Popper was able to confirm it was actually a cyst, not a lipoma.

A cyst is a type of growth that forms slowly when skin cells burrow into the skin rather than shedding off the surface like they're supposed to do, according to the Mayo Clinic. The cells are encapsulated in a thin sac that holds them in place under the skin, Lee said in the video.

Next, Dr. Pimple Popper used her fingers to gently push on the sides of the growth and her scissors to cut away fibers that held the cyst in place under the skin.

"It's like a cyst bath bomb," said Lee because of the growth's round and full shape.

Dr. Pimple Popper pressed around the incision, pushing the goose-egg growth to the surface until it protruded out of the man's skin. Then, she used scissors to snip away tissue at the base of the growth and release it from the man's body.

"We got it, and it's beautiful," Lee declared, reaching for her cauterizing pen to stop bleeding inside the wound and stitching the incision closed.

But the fun didn't stop there.

After removing the cyst, Lee and her staff cut it open to see what was inside. An oatmeal-like substance gushed out.