Question

what is the name of the technique used to treat various types of skin cancer in which individual layers of cancerous tissue are removed and examined under a microscope until a clear margin is obtained?
a. incisional biopsy
b. excisional biopsy
c. exfoliative cytology
d. mohs surgery

Explanation:

Mohs surgery involves removing thin layers of cancer - containing skin one at a time and examining them under a microscope until all cancer - free margins are obtained. Incisional biopsy is taking a sample of tissue for examination, excisional biopsy is removing the entire lesion, and exfoliative cytology is examining cells shed from a surface.

Answer:

d. Mohs surgery