"The forehead is more vascular," says Dr. Pimple Popper. Dr. Pimple Popper grabs a pair of tweezers and scissors to work on finding the lipoma, and the blood just keeps coming.

Spindle cell lipomas showed strong membrane staining in vascular tissue and well-differentiated adipocytes, whereas the densely cellular spindle-cell foci showed no anti-caveolin immunoreactivity.