A technique developed by Johns Hopkins surgeons is providing a new route to get to and remove tumors buried at the base of the skull: through the natural hole behind the molars, above the jawbone and beneath the cheekbone.

The pigmented cells called melanocytes aren't just for making freckles and tans. Melanocytes absorb ultraviolet light, protecting the skin from the harmful effects of the sun. They also are the cells that go haywire in melanoma, as well as in more common conditions as vitiligo and albinism.