Background: Angiokeratomas are cutaneous vascular lesions with common clinical and histological features: dark red to black papules and ectasia of upper dermis vessels, respectively. Multiple angiokeratomas are difficult to treat because they are often too extensive for surgery and cautery, procedures frequently leading to hemorrhage and scarring.
Objective: Our report is designed to evaluate the efficacy of argon laser photocoagulation in the treatment of multiple angiokeratomas.
Methods: Two male patients affected by angiokeratoma circumscriptum and angiokeratoma of Fordyce, respectively, were treated using an argon laser under local anesthesia. The laser beam was used as a hemostyptic and to flatten vascular papules by photocoagulation.
Results: The cosmetic results of argon laser treatment were good. Posttreatment crusting lasted 2 weeks; 4 months later there was excellent healing without scarring.
Conclusion: Angiokeratomas respond favorably to argon laser photocoagulation since vascular ectasias are localized in the papillary dermis. Thus, the argon laser offers significant advantages over traditional methods and produces no side effects.
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http://dx.doi.org/10.1111/j.1524-4725.1995.tb00135.x | DOI Listing |
Lasers Med Sci
January 2025
Plastic Surgery Department, Faculty of Medicine, Tanta University, Tanta, Egypt.
Hypertrophic scars (HTSs) are the result of an abnormal healing process resulting from burns and other severe traumas. The symptoms of that condition include skin irritation, discomfort, and itching. This study aimed to assess the efficacy of fractional carbon dioxide (CO) laser therapy alone or with triamcinolone or 5-fluorouracil (FU) in the treatment of early post-burn hypertrophic scars (HTSs) that develop during the first 6 months after the injury.
View Article and Find Full Text PDFJ Chem Phys
January 2025
Ideal Vacuum Products, LLC, 5910 Midway Park Blvd. NE, Albuquerque, New Mexico 87109, USA.
The hydroxysilylene (HSiOH) molecule has been spectroscopically identified in the gas phase for the first time. This highly reactive species was produced in a twin electric discharge jet using separate precursor streams of 16O2/18O2 and Si2H6/Si2D6, both diluted in high pressure argon. The strongest and most stable laser induced fluorescence (LIF) signals were obtained by applying an electric discharge to each of the precursor streams and then merging the discharge products just prior to expansion into vacuum.
View Article and Find Full Text PDFArch Dermatol Res
January 2025
Dermatology and Venereology Department, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt.
Morphea is a chronic inflammatory fibrosing disorder. Since fibrosis is the hallmark of both scars and morphea, our attention was raised for the possible use of Fractional Ablative CO lasers and microneedling as treatment modalities for morphea. To compare the efficacy and safety of Fractional Ablative CO lasers and microneedling in the treatment of morphea.
View Article and Find Full Text PDFLasers Med Sci
January 2025
Guangzhou Institute of Dermatology, Guangzhou, China.
Since the introduction of CO fractional laser in dermatology, multiple clinical evidences have shown its effectiveness in treating alopecia areata(AA). However, the extent of efficacy remains under-researched, with a lack of extensive and large-scale comparisons, which is a topic of global discussion. We present a case of a 13-year-old male child with AA.
View Article and Find Full Text PDFScience
January 2025
Department of Electrical, Computer and Energy Engineering, University of Colorado Boulder, Boulder, CO, USA.
Optical frequency combs have enabled unique advantages in broadband, high-resolution spectroscopy and precision interferometry. However, quantum mechanics ultimately limits the metrological precision achievable with laser frequency combs. Quantum squeezing has led to significant measurement improvements with continuous wave lasers, but experiments demonstrating metrological advantage with squeezed combs are less developed.
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