How Mohs Surgery Works: Step-by-Step Guide for Patients

When you are preparing for Mohs surgery, understanding each step can help you feel more confident about the process. At First Capitol Surgical Dermatology in St. Charles, MO, Mohs surgery is performed with a focus on precision, comfort, and long-term results. This advanced technique is commonly used to treat certain types of skin cancer while preserving as much healthy tissue as possible. By removing cancer in stages and examining it immediately, Mohs surgery provides a highly controlled approach to treatment.

Preparing for Mohs Surgery

Before the procedure, your provider will review your diagnosis and explain how Mohs surgery will be performed. The treatment is done in an outpatient setting, so you will be able to return home the same day. In most cases, only local anesthesia is needed, which keeps you comfortable while allowing you to remain awake. Patients are often advised to plan for several hours at the office, since the process involves multiple stages and waiting periods.

Step One: Removing the First Layer

The procedure begins with the removal of a thin layer of tissue from the affected area. This initial layer includes the visible cancer along with a small margin of surrounding skin. The goal is to start removing the cancer carefully without taking more tissue than necessary. After this step, the area is bandaged while the removed tissue is prepared for examination.

Step Two: Examining the Tissue

Once the tissue is removed, it is processed and examined under a microscope on site. This is one of the key differences of Mohs surgery compared to other treatments. The surgeon carefully maps and evaluates the tissue to identify any remaining cancer cells. This detailed review allows for precise tracking of where cancer may still be present.

Step Three: Removing Additional Layers if Needed

If cancer cells are still detected, another thin layer is removed only from the specific area where the cells remain. This targeted approach helps preserve healthy skin while ensuring complete removal of the cancer. The process of removal and examination is repeated until no cancer cells are seen. Each stage builds on the previous one, allowing for a highly accurate outcome.

Step Four: Repairing the Area

After the cancer has been fully removed, attention turns to healing the surgical site. Depending on the size and location of the area, the wound may be closed with stitches or allowed to heal naturally. In some cases, additional reconstruction may be recommended to support both function and appearance. Your provider will discuss the best option for your situation.

Schedule a Consultation in St. Charles, MO

If you have been diagnosed with skin cancer, learning how Mohs surgery works can help you make informed decisions about your care. First Capitol Surgical Dermatology in St. Charles, MO, offers Mohs surgery with a focus on accuracy and patient-centered treatment. To schedule a consultation, call (636) 916-1300.