RESUMEN
El láser de alejandrita (755 nm, 100 ns) ha demostrado ser de utilidad en el tratamiento de lesiones melanocíticas superficiales, tales como léntigos simples y solares, lentiginosis y el componente superficial del nevo de Spilus, nevo de Becker y mancha café con leche. Las lesiones melanocíticas dérmicas como el nevo de Ota, nevo melanocítico adquirido y congénito, el componente profundo de las entidades ya señaladas y los pigmentos exógenos de color negro, azul y verde pueden igualmente ser tratados con esta técnica. El grado de aclaramiento depende de múltiples factores, entre los que cabe destacar la densidad de energía, el número de tratamientos aplicados y el tipo de lesión (AU)
Asunto(s)
Humanos , Nevo Pigmentado/cirugía , Terapia por Láser/métodos , Neoplasias Cutáneas/cirugía , Terapia por Láser/instrumentación , Tatuaje , Hipopigmentación/etiología , Nevo de Ota/cirugía , Lentigo/cirugíaRESUMEN
BACKGROUND AND OBJECTIVES: Q-switched laser systems have been used for removal of tattoo-related carbon, graphite, and other particles. We assessed elimination of traumatic tattoos of different origin with Q-switched alexandrite laser in nine patients. STUDY DESIGN/MATERIALS AND METHODS: Fluence threshold was determined and a spot test was made. Q-switched alexandrite laser, with a fluence range 4.5-8.0 J/cm(2) (mean, 7.16 +/- 1.18), was used at 4-5-week intervals. Total treatment ranged from 3-12 sessions (mean, 6.1 +/- 3.6 sessions). Double-pulse technique was used in black/black-bluish areas, but single-shot was applied to slate-gray pigment. RESULTS: More than 95% lightening was achieved in five patients after 5.2 +/- 2.3 sessions, and >75% lightening in six subjects after 6.1 +/- 3.1 sessions of treatment. Blacktop, surgical pen, and gravel tattoos presented a better response than gunpowder/fireworks tattoos (>95% vs. 68.7 +/- 23.9% clearance), or tattoos of unknown origin (>95% vs. 62.5 +/- 53% clearance). Epidermal splattering and pinpoint bleeding were observed in one case. No pigmentary alteration or scarring was seen. CONCLUSION: The Q-switched alexandrite laser is a useful system for removal of traumatic tattoos of diverse origin. The best response (>95% clearance) was achieved in blacktop, surgical pen, and gravel tattoos, although an acceptable degree of lightening may be obtained in tattoos due to gunpowder or fireworks.
Asunto(s)
Procedimientos Quirúrgicos Dermatologicos , Terapia por Láser/métodos , Piel/lesiones , Tatuaje , Adolescente , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Resultado del TratamientoRESUMEN
Linear atrophoderma is a rare disease, first described by Moulin in 1992 in 5 patients, clinically characterized by hyperpigmented, depressed band-like areas along Blaschko's lines. To date, the disease has no effective treatment. We report the seventh case of this condition in a 16-year-old girl and discuss clinical and histopathologic findings, emphasizing the benefit of the potassium aminobenzoate (Potaba) treatment which provided an early stabilization of the skin lesions.