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Skin Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI] - Basal Cell Carcinoma of the Skin Treatment

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Curettage and electrodesiccation

This procedure is also sometimes called electrosurgery. It is a widely employed method for removing primary BCCs, especially superficial lesions of the neck, trunk, and extremities that are considered to be at low risk for recurrence. A sharp curette is used to scrape away the tumor down to its base, followed by electrodesiccation of the lesion base. Although it is a quick method for destroying the tumor, the adequacy of treatment cannot be assessed immediately since the surgeon cannot visually detect the depth of microscopic tumor invasion.

A Cochrane Collaboration systematic review found no randomized trials comparing this treatment method with other approaches.[1] In a large, single-center case series of 2,314 previously untreated BCCs managed at a major skin cancer unit, the 5-year recurrence rate of BCCs of the neck, trunk, and extremities was 3.3%. However, rates increased substantially for tumors larger than 6 mm in diameter at other anatomic sites.[16][Level of evidence 3iiiDii]

Cryosurgery

Cryosurgery may be considered for patients with small, clinically well-defined primary tumors. It is infrequently used for the management of BCC, but may be useful for patients with medical conditions that preclude other types of surgery.

Contraindications include abnormal cold tolerance, cryoglobulinemia, cryofibrinogenemia, Raynaud disease (in the case of lesions on hands and feet), and platelet deficiency disorders. Additional contraindications to cryosurgery include tumors of the scalp, ala nasi, nasolabial fold, tragus, postauricular sulcus, free eyelid margin, upper lip vermillion border, lower legs, and tumors near nerves. Caution should also be used before treating nodular ulcerative neoplasia more than 3 cm in diameter, carcinomas fixed to the underlying bone or cartilage, tumors situated on the lateral margins of the fingers and at the ulnar fossa of the elbow, or recurrent carcinomas following surgical excision.

Edema is common following treatment, especially around the periorbital region, temple, and forehead. Treated tumors usually exude necrotic material after which an eschar forms and persists for about 4 weeks. Permanent pigment loss at the treatment site is unavoidable, so the treatment is not well suited to dark-skinned patients. Atrophy and hypertrophic scarring have been reported as well as instances of motor and sensory neuropathy.

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