A Wood's lamp is a cost effective, safe, easy to use diagnostic tool that is readily available at medical practices. However, its dermatological application has been restricted to the detection of cutaneous infections, the evaluation and classification of pigmentation disorders (such as melasma and vitiligo), and the analysis of disturbances in the metabolism of porphyrins. In the present report the authors demonstrate the use of a Wood's lamp as an alternative to confocal optical microscopy, in the delimitation of the surgical margins of a hypomelanotic lentigo maligna melanoma, whose lack of melanin pigmentation and tumor location in a photodamaged area had hampered a patient's surgical planning.

Keywords: LIGHT; MELANOMA; MELANOMA, AMELANOTIC; MICROSCOPY, CONFOCAL;

Skin biopsy is an important introductory tool and also essential for the dermatologist. The conventional biopsy method, with the use of local anesthetics, sterile fields, surgical instruments (punch, scalpel, forceps, scissors) and suture material demand staff, time and considerable financial investment. Criobiopsy is a simple method, where by using the cryocautery an extraction of good quality skin fragments is made for histopathologic analysis, making it an excellent alternative to the conventional biopsies.

Keywords: Ambulatory Surgical Procedures; Biopsy; Cryosurgery; Dermatology; Histology

Penile cancer is a rare tumor that has a significant impact on patients’ quality of life. In Brazil, the incidence is 5.7 cases/ 100,000 men/year, representing 2% of all types of cancer affecting men in the country and, in 2015, it culminated in 402 deaths. The traditional treatment is total penectomy with perineal urethrostomy and the consequent loss of normal sexual and urinary functions. For the preservation of penile function, organ-sparing surgery is preferred when possible, and Mohs micrographic surgery is an essential surgical alternative.

Keywords: Carcinoma, Squamous Cell; Mohs Surgery; Penile Neoplasms