Deep shave excision of macular melanocytic nevi with the razor blade biopsy technique

BACKGROUND. Shave excision is an established surgical method for removing b enign skin lesions for cosmetic and functional reasons. Usually superficial shave excision is performed with a common scalpel blade for the removal of papular nevi. However, there is little known about deep shave excision of macular melanocytic nevi with the razor blade technique. OBJECTIVE. The present study was undertaken to evaluate the cosmetic outcom e of deep shave excision of macular melanocytic nevi with the razor blade t echnique. Moreover, its potency for sufficient removal of these lesions was investigated. METHODS. Within routine skin cancer screening 45 outpatients with a total o f 77 macular melanocytic nevi were prospectively recruited. Deep shave exci sions of these lesions were performed with a double-edged razor blade follo wed by chemical hemostasis. Histologically all specimens were processed and evaluated in a routine manner. After 6 months the physician and patients e valuated the shave sites for cosmetic outcome with a score graded from 1 to 4 (1 = excellent; 2 = good; 3 = moderate; 4 = poor). RESULTS. Histologically 88% (68 of 77) of the melanocytic lesions were desc ribed as completely excised and 60% (46 of 77) were diagnosed as atypical m elanocytic nevi; 12% (9 of 77) of the nevi were incompletely excised on the depth. On average, the deep margin of the specimens (n = 77) was 0.5 mm (r ange 0-1.8 mm) and the lateral margin was 2 mm (range 0.3-8.2 mm). After 6 months 56 shave sites could be reassessed. We observed mild hypopigmentatio n in 52% (29 of 56), hyperpigmentation in 32% (18 of 56), and erythema in 2 3% (13 of 56). Recurrent nevi occurred in 13% (7 of 56). The evaluation of the cosmetic outcome by the patients (mean score 1.7) achieved better resul ts than the evaluation by the physician (mean score 2.5). The cosmetic resu lts showed no significant (P > .05) differences in various anatomic sites. CONCLUSION. Our data confirm that deep razor blade excision presents a high ly useful and inexpensive method for the removal of macular melanocytic nev i that yields adequate specimens for pathologic interpretation. We consider that shave excision with the razor blade technique is potentially much les s scarring than full-thickness scalpel excisions of nevi. In particular, th is is of great significance for patients with multiple nevi, such as dyspla stic nevi syndrome.