Excision vs Mohs Surgery vs Electrodesiccation and Curettage
Posted on: February 23rd, 2026 by Our Team
When skin cancer is diagnosed, the best treatment depends on the type of cancer, its location, its size and depth, and whether it has high-risk features or has been treated before. Peak Skin Center offers multiple surgical options for skin cancer treatment, and board-certified dermatologist and board-certified, fellowship trained Mohs surgeon Dr. Thomas Knackstedt helps determine which approach provides the best balance of cure rate, tissue preservation, cosmetic outcome, and recovery expectations.
Below is a practical overview of three common in-office treatments: standard excision, Mohs surgery, and ED&C (electrodesiccation and curettage).
When excision is commonly used
Standard excision is frequently used for many basal cell carcinomas and squamous cell carcinomas in locations where a straightforward removal with a margin of normal-appearing skin is appropriate. Excision is also commonly selected when the tumor is on the trunk or extremities, when the borders are well-defined, and when the cancer is considered lower risk based on its subtype and prior history. At Peak Skin Center, Dr. Thomas Knackstedt may recommend excision when complete removal is likely with a single procedure and when the anatomic site can be closed safely with stitches.
How excision is performed
After local anesthesia, the lesion is removed with a scalpel along with a planned margin of surrounding skin. The specimen is oriented and sent to pathology to confirm the diagnosis and evaluate margins. The wound is typically closed with stitches, often including deeper dissolving sutures to reduce tension and surface sutures that are removed later. Depending on the size and location, the closure may be a simple line, a layered repair, or a more advanced closure technique.
What recovery is like
Recovery from excision resembles recovery from a minor outpatient surgery. Mild soreness, swelling, and bruising are common during the first several days. Activity restrictions may be recommended to avoid pulling on the repair, especially on the back, shoulders, legs, and other areas under tension. Sutures are either dissolvable or are removed in about 1–2 weeks depending on location, while deeper sutures dissolve over time. A linear scar is expected and typically continues to remodel and fade over months.
When Mohs surgery is commonly used
Mohs surgery is most often used for skin cancers in cosmetically or functionally sensitive areas where tissue preservation is important, such as the nose, eyelids, lips, ears, and hands. It is also commonly chosen for cancers that are recurrent, have indistinct borders, are larger, or have higher-risk subtypes that are more likely to send microscopic extensions beyond what is visible on the surface. Mohs surgery may be recommended when the goal is to remove all cancer while sparing as much healthy skin as possible. Peak Skin Center coordinates Mohs surgery care and treatment planning, and Dr. Thomas Knackstedt helps guide when Mohs surgery is the most appropriate option.
How Mohs surgery is performed
Mohs surgery is performed in stages. After local anesthesia, Dr. Knackstedt removes a thin layer of tissue and maps it precisely. That tissue is processed and examined under a microscope the same day, with the entire peripheral and deep margin evaluated. If cancer cells remain, another thin layer is removed only where the map shows residual tumor. This continues until margins are clear. After clearance, the wound is repaired. Repair may be performed the same day and can range from a simple closure to a flap or graft depending on location and size; in some cases, a planned delayed repair or referral for reconstructive management is used.
What recovery is like
Because Mohs surgery is staged, the visit can be longer than standard excision. Recovery depends on the final wound size and the repair technique. Swelling and bruising can be more noticeable around the eyes, nose, and lips, and activity restrictions are often advised to protect the repair. Stitches are either dissolvable or removed in about 1–2 weeks depending on location. Scars generally improve over time, and careful sun protection supports better long-term cosmetic results. Peak Skin Center provides clear wound care instructions and follow-up planning, and Dr. Thomas Knackstedt helps coordinate next steps when reconstruction is involved.
When ED&C is commonly used
ED&C is a common treatment for selected low-risk skin cancers, most often superficial basal cell carcinoma or squamous cell carcinoma in situ in appropriate locations. It is typically considered when the lesion is small, well-defined, and located on areas such as the trunk or certain extremity sites where cosmetic demands are lower and where hair follicles and critical structures are less of a concern. ED&C is generally not preferred for high-risk facial areas, recurrent tumors, aggressive subtypes, or lesions with features suggesting deeper invasion, because those situations often require margin-controlled surgery or excision. At Peak Skin Center, Dr. Thomas Knackstedt uses ED&C selectively when it matches the clinical scenario and offers a reasonable balance of effectiveness and efficiency.
How ED&C is performed
After local anesthesia, the dermatologist uses a curette (a small scraping instrument) to remove tumor tissue, then uses a cautery device to desiccate the base and edges. The scrape-and-cauterize cycle is often repeated multiple times to improve clearance. Unlike excision and Mohs surgery, ED&C does not typically produce a linear stitched closure; the area heals by secondary intention (from the bottom and edges inward). Tissue may or may not be submitted for pathology depending on the clinical plan and lesion type, but diagnostic confirmation is commonly established by biopsy before treatment.
What recovery is like
ED&C sites usually heal as a round or oval wound that forms a crust and gradually fills in with new tissue. Healing commonly takes several weeks and can take longer on lower legs due to slower circulation. The final result is often a flat, lighter-colored scar, and the area may remain pink for some time as it matures. Mild soreness and drainage can occur early, and careful wound care helps reduce infection risk and improves the cosmetic outcome.
Excision, Mohs surgery, and ED&C each have a clear role in skin cancer care, and the best choice for patients in Cary, Apex, Holly Springs or Fuquay-Varina depends on tumor risk, location, and patient-specific factors. Peak Skin Center focuses on matching treatment to the lesion’s behavior and the anatomy involved, with board-certified dermatologist Dr. Thomas Knackstedt guiding the decision-making process and helping coordinate biopsy review, definitive treatment, and follow-up skin surveillance.
At a Glance
Dr. Thomas Knackstedt
- Double board certified in dermatology and Mohs Surgery
- Over ten years of experience providing evidence-based care
- Nationally renowned physician leader with numerous publications, lectures, and academic affiliations
- Learn more
