Raul S. Gonzalez, M.D., our new Deputy Editor-in-Chief. He will assist Editor-in-Chief Debra Zynger, M.D., in setting overall standards for the textbook, assigning topics and reviewing topic drafts. You can see PathologyOutlines.com
Spotlight On Dr. Gonzalez
A 66 year old female presented with a firm, painless, localized swelling with pustular discharge at the upper labial mucosa. The biopsy is shown below. Which immunohistochemical finding would one expect?