Alberta Cancer Foundation

The Mohs Process

Share This Article


mohs1
Step 1: The roots of a skin cancer may extend beyond the visible portion of the tumour. If these roots are not removed, the cancer will recur.

mohs2
Step 2: The visible portion fo the tumour is removed.

mohs3
Step 3: A layer of skin is removed and divided into sections. The ACMS surgeon then colour codes each of these sections with dyes and makes reference marks on the skin to show the source of these sections. A map of the surgical site is then drawn.

mohs4
Step 4: The undersurface and edges of each section are microscopically examined for remaining cancer.

mohs5
Step 5: If cancer cells are found under the microscope, the ACMS surgeon marks their location onto the “map” and returns to the patient to remove another layer of skin – but only from precisely where the cancer cells remain.

mohs6
Step 6: The removal process stops when there is no longer any evidence of cancer remaining in the surgical site. Because Mohs surgery removes only tissue containing cancer, it ensures that the maximum amount of healthy tissue is kept intact.

Man in a blue suit against a brown wall.
Bright Mind

Bright mind.

Dr. Omar Khan uses data and analytics to inform and improve cancer care.

Two women pose looking into the camera with a pink background.
Expert Advice

Helping women reclaim their bodies.

The Nipple Sisters, Carmelina Baccari and Kacie Rainey, help breast cancer survivors regain their body confidence through areola restoration.