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Click Here to learn about Mohs surgery from the American Society for Mohs Surgery website.
Mohs surgery, also called Mohs micrographic surgery, is a specialized technique for removing skin cancer. Named for its originator, Dr. Frederic Mohs, Mohs surgery is the treatment of choice for many skin cancers of the head and neck, or cancers that have recurred after a previous treatment.
Mohs surgery offers the following advantages:
Mohs surgery is an outpatient procedure that is performed under local anesthesia; therefore the risks associated with prolonged general anesthesia are avoided. Before the surgery begins, a small needle is used to place the numbing medicine (Lidocaine) in the area surrounding the skin cancer. This may cause some discomfort, however, the remainder of the procedure is relatively pain free.
The surgeon first removes the obvious skin cancer that can be seen with the unaided eye. Next, a very thin saucer-shaped layer of normal appearing skin is removed, taking special care to map the tissue so that the surgeon is able to determine the corresponding margins on the patient. The tissue is then processed by the laboratory located in our office – a process that takes about an hour. Because there is a direct transfer of the tissue from the surgeon to the lab, the tissue can be prepared in a special manner that enables the doctor to examine the entire bottom surface and outside edges of the tissue. This differs from the frozen sections prepared in a hospital setting which, in fact, represent only a small portion of the true tumor margins.
After processing, the surgeon uses a microscope to trace the roots of the skin cancer to see if the entire tumor has been removed. If the margins are clear and the tumor has been completely removed, then the surgeon will repair the wound that was created by tumor removal. The repair usually involves sutures (stitches).
If the margins are not clear, meaning that some of the tumor was left behind, then the surgeon will go back and remove the edges only in the area where the roots were left behind. This tissue will likewise be processed and examined with a microscope. If tumor removal is complete, then sutures will be used to repair the defect, if not, then another layer of skin will be taken. This process is repeated as many times as necessary until the entire tumor is removed.
At North Idaho Dermatology, we look forward to making sure your experience with Mohs micrographic surgery is a positive one and appreciate the opportunity to serve you.
Mohs surgery has the highest cure rate of all skin cancer treatments..
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