RESUMEN
BACKGROUND AND OBJECTIVES: Post inflammatory hyperpigmentation (PIH) can be difficult to treat especially in patients with darker skin types as darker skin carries increased epidermal melanin content. Various treatments available to improve the appearance of PIH may incite further pigmentation thus making treatment extremely difficult and frustrating. The purpose of this study was to perform a retrospective chart and photographic review to evaluate the efficacy and safety profile of a low energy low density non-ablative fractional1927 nm wavelength laser treatment for PIH in patients with Fitzpatrick skin types IV-VI. STUDY DESIGN: A retrospective evaluation of 61 patients with PIH treated with a 1927 nm laser was conducted at a single center. Inclusion criteria required at least 2 treatment sessions so that before and after treatment photographs would be available for comparison and study purposes. Two blinded physician-evaluators using a visual analog scale for percentage of pigmentary clearance in standard photographs assessed treatment efficacy. RESULTS: The mean percent improvement after treatment, evaluated by two dermatologists was 43.24%. The correlation between raters was statistically significant (Pearson's correlation coefficienct of r = 0.59, p < 0.0001). No side effects were observed in the patients treated with the 1927 nm laser. CONCLUSION: The low energy low density non-ablative fractional 1927 nm wavelength laser is a safe and effective modality for improving post inflammatory hyperpigmentation in patients with darker skin types. Lasers Surg. Med. © 2019 Wiley Periodicals, Inc.
Asunto(s)
Hiperpigmentación/radioterapia , Terapia por Luz de Baja Intensidad , Adulto , Anciano , Femenino , Humanos , Hiperpigmentación/etiología , Hiperpigmentación/patología , Masculino , Persona de Mediana Edad , Fotograbar , Estudios Retrospectivos , Pigmentación de la Piel , Resultado del TratamientoRESUMEN
OBJECTIVE: Nevus of Ota represents congenital dermal melanocytosis in a trigeminal distribution, most commonly occurring in Asian individuals and other individuals with skin of color. Evidence suggests early treatment is beneficial. Multiple reports have shown efficacy and safety of Q-switched laser treatment in adults. There is little data on children and in non-Asian skin types. This series was done to demonstrate safe and effective use of Q-switched laser therapy in children of multiple skin types. STUDY DESIGN: Retrospective case series. METHODS: This was a chart review of patients under 18 years old who presented to our practice from 2002 to 2015 with a clinical diagnosis of nevus of Ota who were treated with Q-switched lasers (694 and 1,064 nm). Patients were treated without the use of general anesthesia or sedation, and corneal shields were used in appropriate cases. Percentage of improvement as well as side effects were rated by five physicians independently. Improvement, when present, was rated in quartiles (1-25%, 26-50%, 51-75%, and 76-100% improvement). RESULTS: Twenty-four children were included. The average age at the start of treatment was 3.9 years old (range of 3 months to 12.4 years), and patients had Fitzpatrick skin types IV through VI. The mean number of treatments was 9.3. Assessment revealed excellent response (76-100% improvement) in 70% of patients and good to excellent response (51-100% improvement) in 86%. Two patients (8%) had post-inflammatory hyperpigmentation, one of whom also had focal hypopigmentation. CONCLUSION: Treatment of nevus of Ota with Q-switched lasers in children with skin of color, without general anesthesia or sedation, is safe and effective. Early intervention should be encouraged for better efficacy and to prevent psychosocial distress in later childhood and adulthood. Lasers Surg. Med. 50:56-60, 2018. © 2017 Wiley Periodicals, Inc.
Asunto(s)
Neoplasias Faciales/radioterapia , Láseres de Estado Sólido/uso terapéutico , Terapia por Luz de Baja Intensidad/instrumentación , Nevo de Ota/radioterapia , Neoplasias Cutáneas/radioterapia , Niño , Preescolar , Neoplasias Faciales/patología , Femenino , Humanos , Lactante , Masculino , Nevo de Ota/patología , Estudios Retrospectivos , Neoplasias Cutáneas/patología , Pigmentación de la Piel , Resultado del TratamientoRESUMEN
BACKGROUND: Injection of calcium hydroxylapatite filler may result in nodule formation owing to superficial placement of the filler. Calcium hydroxylapatite nodules are difficult to reverse. Previously reported therapeutic options are limited and include intralesional triamcinolone, massage, needling, and excision, each with inconsistent results or potential for scarring. OBSERVATION: We have observed complete resolution of calcium hydroxylapatite nodules after a single treatment with fractional carbon dioxide laser. CONCLUSIONS: A single session of fractional carbon dioxide laser treatment may resolve selected cases of calcium hydroxylapatite nodules. The mechanism of action may involve conversion of the product into tricalcium phosphates which dissolve readily. This novel therapeutic technique may enhance treatment options for a difficult clinical problem.
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Blefaroplastia/efectos adversos , Durapatita/efectos adversos , Párpados , Granuloma de Cuerpo Extraño/cirugía , Terapia por Láser/métodos , Láseres de Gas/uso terapéutico , Adulto , Materiales Biocompatibles/administración & dosificación , Materiales Biocompatibles/efectos adversos , Blefaroplastia/métodos , Durapatita/administración & dosificación , Femenino , Estudios de Seguimiento , Granuloma de Cuerpo Extraño/diagnóstico , Granuloma de Cuerpo Extraño/etiología , Humanos , Inyecciones IntraocularesRESUMEN
BACKGROUND AND OBJECTIVES: Skin laxity of the body is a growing cosmetic concern. Laxity can result from chronological or photoaging and changes in body dimensions during pregnancy or weight loss. The end result is loose, sagging skin, and localized fat deposits. Liposuction and abdominoplasty or brachioplasty are established approaches to these issues. Patient desire for alternatives to surgical correction has spawned the development of non-invasive body contouring devices. The combination of infrared light (IR), bipolar radiofrequency (RF), vacuum and mechanical massage (Velashape, Syneron Medical Ltd, Israel) has demonstrated efficacy in improving skin appearance and circumference of the thighs [Goldberg et al., Derm Surg 2008; 34:204-209; Fisher et al., Derm Surg 2005; 31:1237-1241; Arnoczky and Aksan, J Am Acad Orthop Surg 2000; 8:305-313; Alster and Tanzi, J Cosmetic Laser Therapy 2005; 7:81-85; Wanitphakdeedecha and Manuskiatti, J Cosmet Dermatol 2006; 5:284-288; Nootheti et al., Lasers Surg Med 2006; 38: 908-912], but only anecdotal evidence has supported its use on other anatomic locations. This study was designed to evaluate the efficacy and safety of Velashape on additional body sites and more rigorously examine the technology's impact on upper arm as well as abdominal and flank circumference. STUDY DESIGN AND METHODS: Subjects were 28-70 years old, skin types I-V. Nineteen subjects underwent 5 weekly treatments of the upper arms, and 10 subjects underwent 4 weekly treatments of the abdomen and flanks. Treatments were performed using Velashape. Circumference measurements, photographs, and subject weights were performed prior to treatment and at 1- and 3-month follow-ups. Subjects were asked to record their treatment satisfaction level. RESULTS: Change in arm circumference, at the 5th treatment was statistically significant with a mean loss of 0.625 cm. At 1- and 3-month follow-ups, mean loss was 0.71 and 0.597 cm respectively. Reduction of abdominal circumference at 3rd treatment was statistically significant with a 1.25 cm mean loss. At 1- and 3-month follow-ups, average loss was 1.43 and 1.82 cm respectively. CONCLUSIONS: This study demonstrates with statistical significance, sustainable reduction in circumference and improvement in appearance of arms and abdomen following treatment with Velashape.
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Envejecimiento de la Piel/efectos de la radiación , Piel/efectos de la radiación , Grasa Subcutánea/efectos de la radiación , Abdomen , Adulto , Anciano , Brazo , Dorso , Técnicas Cosméticas , Electricidad , Femenino , Humanos , Masaje , Persona de Mediana Edad , Periodo Posparto , VacioRESUMEN
Fractionated carbon dioxide (CO(2)) laser resurfacing combines the concept of fractional photothermolysis with an ablative 10,600-nm wavelength. This technology allows for the effective treatment of rhytides, photodamage, and scars, with shorter recovery periods and a significantly reduced side effect profile as compared to traditional CO(2) laser resurfacing. In this article, the authors review the concept of fractional photothermolysis, the expanding array of indications for use of fractionated CO(2) lasers, and their preferred treatment technique.