Basal cell carcinoma is removed through several methods, and the right one depends on the tumor’s size, location, and how aggressive it appears under a microscope. Most cases are treated with an outpatient procedure under local anesthesia, meaning you’re awake and go home the same day. The options range from a precise layer-by-layer surgical technique with a 99% cure rate to topical creams you apply at home for weeks.
Mohs Surgery: The Most Precise Option
Mohs micrographic surgery is considered the gold standard for basal cell carcinoma, especially on the face, ears, nose, and other areas where preserving healthy tissue matters. It has a 99% five-year cure rate for tumors that haven’t been treated before and a 94.4% cure rate for tumors that have come back after a previous treatment.
The procedure works in stages. After numbing the area, the surgeon scrapes away any visible tumor, then removes a thin layer of surrounding tissue at a 45-degree angle. That tissue gets color-coded, pressed flat, and examined under a microscope right there in the office. The surgeon maps exactly where cancer cells remain and goes back to remove only that specific section. This cycle repeats until no cancer is visible anywhere along the margins. Most cases require two or three rounds, and the whole process typically takes a few hours.
What makes Mohs different from standard surgery is how the tissue gets examined. Traditional pathology looks at thin vertical slices, which only samples a small fraction of the margin. Mohs processing lets the surgeon examine virtually 100% of both the outer edge and the deep edge in a single tissue section. That’s why the cure rate is so high and why less healthy skin gets sacrificed in the process.
Standard Surgical Excision
For tumors on the trunk, arms, or legs where there’s more skin to work with, a standard excision is often the go-to approach. The surgeon cuts out the entire tumor along with a buffer zone of normal-looking skin around it, then sends the tissue to a pathology lab for analysis. You won’t get results during the procedure the way you do with Mohs. If the lab finds cancer cells at the edges, a second surgery may be needed.
The size of that buffer zone depends on the tumor’s risk profile. For small, well-defined tumors under 2 centimeters, a 3-millimeter margin of healthy tissue around the visible edges is usually enough. For larger or more aggressive tumors, surgeons take 4 to 6 millimeters. Recurrent tumors, those that have already come back once, call for at least a 6-millimeter margin or a switch to Mohs surgery instead. A systematic review of nearly 3,000 lesions found a recurrence rate of about 3%, and most of those recurrences happened when the excision margin was less than 3 millimeters.
Curettage and Electrosurgery
This method works well for superficial basal cell carcinomas, the type confined to the top layer of skin. After numbing the area, the doctor scrapes the tumor away using a curette, a thin instrument with a sharp looped edge. Then an electric needle is used to destroy any remaining cancer cells and stop bleeding. The scrape-and-burn cycle is often repeated two or three times in the same session.
Because there’s no tissue sent to a lab and no stitches, this is one of the quickest treatments. It’s best suited for low-risk tumors on flat surfaces like the chest or back, where the curette can work effectively. It’s not ideal for tumors on the nose, around the eyes, or in skin creases, where precision and cosmetic outcomes matter more.
Topical Cream Treatments
For superficial basal cell carcinomas that are small and low risk, a prescription cream applied at home can sometimes replace surgery entirely. The most studied option is imiquimod 5% cream, which works by triggering your immune system to attack the cancer cells rather than killing them directly. The typical regimen involves applying the cream once daily, five times per week, for 6 to 10 weeks.
Clearance rates range from about 76% to 88% depending on the study, with a pooled rate around 82% when confirmed by both clinical exam and biopsy. That’s lower than surgery, so topical treatment is generally reserved for situations where surgery isn’t practical or when the tumor is very low risk. The treatment area usually becomes red, raw, and crusted during the process, which is actually a sign the cream is working.
Photodynamic Therapy
Photodynamic therapy, or PDT, uses a combination of a light-sensitizing cream and a specific wavelength of light to destroy cancer cells. A cream is applied to the tumor and left to absorb, typically under a bandage. The cream makes the cancer cells highly sensitive to light. Then a red LED lamp, usually around 632 nanometers, is directed at the area for roughly 7 to 9 minutes. The light activates the chemical in the cells and kills them.
There’s also a daylight version of the treatment where, after the cream is applied, you simply expose the area to natural daylight for about two and a half hours instead of sitting under a lamp. PDT tends to produce better cosmetic results than surgery because it doesn’t involve cutting, but it’s limited to superficial tumors and sometimes requires repeat sessions.
Treatment for Advanced Cases
In rare situations, basal cell carcinoma grows too large for surgery or spreads to other parts of the body. These cases are treated with oral medications that block a specific signaling pathway the cancer relies on to grow. Two drugs are available: one taken as a daily 150-milligram capsule (approved for both locally advanced and metastatic cases) and another at 200 milligrams daily (approved only for locally advanced disease).
These medications can shrink tumors significantly, but they come with notable side effects. Muscle spasms affect 54% to 71% of patients depending on the drug. Hair loss occurs in roughly half to two-thirds of patients, and taste changes (things tasting metallic or simply wrong) affect 44% to 56%. These side effects are common enough that doctors often plan treatment breaks or dose adjustments to help patients tolerate the medication.
What Healing Looks Like After Removal
Most surgical wounds from basal cell carcinoma removal heal within one to three weeks. If you have stitches, they’re typically removed within that window, with the exact timing depending on the location. Facial stitches often come out sooner (around five to seven days) because the face has strong blood supply and heals quickly, while stitches on the trunk or legs may stay in longer.
The wound site will look red and raised at first. Full scar maturation takes much longer, often six months to a year, as the scar gradually flattens and fades. During the initial healing period, you’ll generally keep the area covered with a bandage, apply petroleum jelly to keep it moist, and avoid anything that stretches or strains the wound.
How Surgeons Repair Larger Wounds
When a tumor is small enough, the surgeon can simply pull the wound edges together and close with stitches (called linear closure). Larger defects, especially on the nose, need more creative reconstruction. The approach depends on exactly where the tumor was and how big the resulting hole is.
Local skin flaps, where nearby skin is rotated or advanced to cover the wound, are the most common repair for defects on the side of the nose. About 59% of those wounds get a flap. For the nasal tip, skin grafts (a patch of skin taken from another area, often behind the ear or from the forehead) are more common, used in about 40% of cases. Grafts are also more likely when the tumor was larger or had a more aggressive growth pattern. For the bridge and base of the nose, simple straight-line closure is often possible because there’s enough loose skin to work with.
Your surgeon will typically discuss the reconstruction plan before the procedure so you know what to expect. In some cases, particularly with Mohs surgery, one surgeon removes the cancer and a separate reconstructive surgeon closes the wound on the same day or the next.