Loyola University Medical Education Network

Seborrheic keratosis-treatment by cryosurgery

Loyola University Medical Center

This lesion is being treated for cosmetic reasons. Liquid nitrogen freezes the lesion, which will necrose and shed in 2-4 weeks. Small round microcysts, which appear as dark spots in this image, are characteristic of seborrheic keratoses. These microcysts can also often be seen as light or yellowish spots if the lesion is moistened.

Jason R. Swanson and Jeffrey L. Melton
Last Updated: July 12, 1996
Created: January 19, 1996