Mohs surgery, high efficacy in the removal of skin tumors

Dermatología Cirugía de Mohs

Mohs surgery has an efficacy in the removal of tumors of 99% compared to 80% of conventional surgery.

Mohs surgery is a very specific surgery that allows a microscopic analysis of 100% of the margins of the excised piece (lateral and deep) at the same time of surgery through the joint work of the dermatologist and the pathologist. In this way it is possible to immediately re-excise the residual cancerous tissue with a minimum safe margin of healthy skin, avoiding more extensive surgeries with their consequent complications: hemorrhages, re-interventions, unsightly scars… In short, it is a more effective surgery with a more aesthetic result.

To achieve these surgical results, we work as a team of dermatologists and pathologists, who are able to look at the edges of the lesion under the microscope at the same time as the surgery, so that a few minutes after excision they can tell the dermatologist if the edges of the lesion are already free or if it is necessary to enlarge at a specific point. Subsequently, and only when they are sure that the tumor has been completely removed, the lesion is closed with the least aesthetic impact.

The performance of Mohs surgery requires long learning and practice on the part of both the dermatologist and the pathologist. The surgical technique is highly specific and must be performed meticulously to obtain a 99% cure rate. Conventional surgery offers a cure rate of 80%.

In the Dermatology Department of the HM Sanchinarro Hospital We have been performing Mohs surgery for 10 years and we have a team of Dermatologists and Pathologists with extensive experience and training in Mohs surgery with rotations in the most prestigious national and international centers for this type of surgery: UT Southwestern (Dallas, USA), Instituto Valenciano de Oncología (Valencia, Spain), Hospital Universitario Ramon y Cajal (Madrid, Spain), Hospital Clínico San Carlos de Madrid, Fundación Jiménez Díaz de Madrid and Hospital General Universitario de Albacete.


● Tumor located in high-risk anatomical area: facial areas near complex structures such as the nose, eyes or mouth, scalp or areas near joints.

● Aggressive tumor: infiltrative basal cell carcinoma, poorly differentiated or high-grade squamous cell carcinoma.

● Recurrent cutaneous tumor.

● Cutaneous tumor with high relapse rates: dermatofibrosarcoma protuberans, Merkel’s carcinoma, sebaceous carcinoma, extramammary Paget’s disease….

● Large tumors >0.6-1cm(face), >2cm (rest of body).

● Tumor with poorly defined clinical borders.

● Tumors on irradiated skin or chronic scar.

● Immunosuppressed patients.

Dr. Claudia Guerrero

Cirugía de Mohs

Mohs Surgery