Mohs surgery will likely leave a scar that may take up to a year to heal. In fact, one study showed that 8 out of 10 people who had Mohs surgery ended up with a scar that was larger than they thought it would be. There is no way to know what your skin will look like after surgery until the surgeon removes all the cancer. Learn more about wounds and scars from Mohs surgery and what you can do to help yourself have the best results.