Mohs micrographic surgery is a specialized and highly effective procedure for treating common types of skin cancer. The technique was developed by Dr. Fredrick E. Mohs, after which it is named.  By using this microscopic margin-controlled surgery, skin cancer cure rates of over 99% can be obtained.  These cure rates are the highest compared to any other type of cancer treatment.

Mohs surgery is most commonly used to treat basal cell carcinoma and squamous cell carcinoma of the skin.  Certain melanomas and other skin cancers can also be treated with Mohs surgery.

Because a microscope is used to guide the surgery, the Mohs procedure provides precise removal of the cancerous tissue, while sparing healthy tissue. It is for this reason that Mohs surgery is especially useful for anatomically and functionally important areas such as the eyelids, nose, and lips, as well as other cosmetic areas on the face.

Mohs surgery is also used to treat aggressive and/or recurrent skin cancers, skin cancers with ill-defined borders, cancers that arise in areas previously treated with radiation and those patients with suppressed immune systems or specific genetic disorders.

Today, Mohs surgery is performed by dermatologists who receive specialized training in the technique. The training programs are organized and directed by the American College of Mohs Surgeons in the United States. These comprehensive programs develop expertise in skin oncology, pathology and reconstructive surgery. The Canadian Association for Mohs Surgeons recognizes the importance of this procedure and helps to provide education and support for patients requiring Mohs surgery in Canada.

Tissue sparing and extraordinarily low recurrence rates make Mohs surgery the gold standard and procedure of choice for treating specific skin cancers.

Mohs Surgery is currently performed at the the Civic Campus of the Ottawa Hospital in Ottawa, Ontario. Please contact the Division of Dermatology at the Ottawa Hospital for appointment inquiries.