Κυριακή 11 Απριλίου 2021

Does Double-Pass Pulsed-Dye Laser With Long and Short Pulse Duration Increase Treatment Efficacy of Port-Wine Stain? A Randomized Clinical Trial

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imageBACKGROUND Although pulsed-dye laser (PDL) 595 nm is known as the gold standard for treatment of port-wine stains (PWS), complete clearance of lesions occurs in a minority of cases. OBJECTIVE To compare the efficacy and safety of double-pass pulsed-dye laser (DPL), long pulse duration (20 m/s) followed by short pulse duration (1.5 m/s) within 20 minutes interval, with single-pass pulsed-dye laser (SPL) for (1.5 m/s) in the treatment of PWS. METHODS Twenty-four patients with PWS underwent 3 sessions of PDL. Each lesion was randomly divided into 2 portions to receive DPL or SPL. Colorimetric and dermoscopic evaluations were used to determine the response objectively. In addition, improvement was scored subjectively using the visual analog scale (VAS). RESULTS According to colorimetric analysis, the mean blanching rates for DPL and SPL treated sites were 48% (SD = 0.215) and 37% (SD = 0.213), respectively (p = .001). With VAS, 3.79 (SD = 0.93) and 3.33 (SD = 0.91) improvement scores were reported in the DPL and SPL treated areas, respectively (p = .008). Dermoscopic images showed that larger deep vessels were the most common remnant vessels in both treatment areas. CONCLUSION Compared with SPL, DPL with 20 minutes interval seems to be a more effective and safe method for the treatment of PWS.
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Poly-l-Lactic Acid Preinjection Aspiration as a Safety Checkpoint

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Vaginal Rejuvenation: A Retrospective Review of Lasers and Radiofrequency Devices

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imageBACKGROUND Vaginal rejuvenation is a topic of interest to multiple specialties, including dermatologists, plastic and reconstructive surgeons, urologists, and gynecologists. Evidence suggests that minimally invasive, energy-based devices—radiofrequency and laser therapy—are effective at vaginal tightening and decreasing symptoms of genitourinary syndrome of menopause (GSM) and/or vulvovaginal atrophy (VVA). MATERIALS AND METHODS A systematic review was completed using PubMed in November 2018 with search terms "vaginal" or "vagina" and "rejuvenation" or "tightening" or "laxity" or "radiofrequency" or "laser," as well as "genitourinary syndrome of menopause," "pelvic prolapse," "atrophic vaginitis," "vulvovaginal atrophy," "sexual function," "urinary incontinence," and "radiofrequency" or "laser." Inclusion criteria were articles written in English and clinical trials or case reports/series dealing with human subjects. RESULTS We identified 59 studies (3,609 women) treated for vaginal rejuvenation using either radiofrequency or fractional ablative laser therapy. Studies report improvement in symptoms of GSM/VVA and sexual function, high patient satisfaction, and minor adverse events, including treatment-associated pain, swelling, or vaginal discharge. CONCLUSION This review demonstrates radiofrequency and laser are efficacious for the treatment of vaginal laxity and/or atrophy. Further research needs to be completed to determine which specific pathologies can be treated, if maintenance treatment is necessary, and long-term safety concerns.
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Treatment of Angiolymphoid Hyperplasia With Eosinophilia With Pulsed Dye Laser

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Laser Speckle Contrast Imaging for the Objective Assessment of Blood Perfusion in Keloids Treated With Dual-Wavelength Laser Therapy

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imageBACKGROUND Most of the widely used methods for the assessment of keloid treatment are subjective grading scales based on the opinion of an individual clinician or patient. There is a growing need for objective methods to evaluate keloid treatment. OBJECTIVE This study aimed to evaluate the value of laser speckle contrast imaging (LSCI) as an objective method for the assessment of dual-wavelength laser therapy for keloids. METHODS This prospective study included 21 patients with 54 keloids. All patients were treated with a combined 585-nm pulsed dye laser and 1,064 nm neodymium-doped yttrium aluminum garnet dual-wavelength laser at 4 weeks to 6 weeks intervals. Keloids were assessed using the Vancouver Scar Scale (VSS) and LSCI. RESULTS The total VSS score significantly decreased after 4 sessions of treatment (p
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How to Biopsy a Cutaneous Soft-Tissue Hamartoma

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Pulse-Dye Laser Followed by Betamethasone-Calcipotriol and Fractional Ablative CO2-Laser-Assisted Delivery for Nail Psoriasis

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imageBACKGROUND Nail psoriasis is a common and potentially debilitating condition for which no effective and safe nonsystemic therapy is currently available. Recently, laser-assisted drug delivery (LADD) is being increasingly used to facilitate transcutaneous penetration of topical treatments. OBJECTIVES We set to assess the efficacy and safety of combined pulse-dye laser and fractional CO2 laser-assisted betamethasonecalcipotriol gel delivery for the treatment of nail psoriasis. MATERIAL AND METHODS We conducted a prospective, intrapatient comparative study in a series of 22 patients with bilateral fingernail psoriasis. Nails on the randomized hand were treated with 3 monthly sessions of pulse-dye laser to the proximal and lateral nail folds followed by fractional ablative CO2 laser to the nail plate. Between treatments and one month following the last treatment, the participants applied betamethasone propionate-calcipotriol gel once daily to the nail plate. Clinical outcome was ascertained using nails photography, the Nail Psoriasis Severity Index (NAPSI) and patient satisfaction. RESULTS Seventeen completed the study. Three participants withdrew from the study because of treatment-associated pain. Treatment was associated with a statistically significant improvement of the NAPSI scale (p
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Recurrence Rates Following Reconstruction Strategies After Wide Excision of Hidradenitis Suppurativa: A Systematic Review and Meta-analysis

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imageBACKGROUND Wide excision (WE) is generally considered to be the most common treatment for recurrent hidradenitis suppurativa. When performed, excision is followed by decisions regarding best options for management of the surgical defect. Different reconstructive strategies (RSs) have been used, with varying rates of recurrence. OBJECTIVE To provide an up-to-date systematic review of the complete literature for different RS after WE and their recurrence rates. METHODS A systematic literature search of the complete available literature and a meta-analysis of proportions were performed on the included studies. RESULTS Of a total of 1,813 retrieved articles, 79 were included in the analysis. Most were retrospective analyses, with only one randomized controlled trial (RCT) and 7 prospective analyses. The RS described were divided into primary closure (PC), secondary intention healing (SIH), skin graft (SG), and fasciocutaneous flaps (FCF). The average estimated recurrence for PC was 22.0% (95% confidence interval [CI], 8.0%–40.0%), for SIH 11.0% (95% CI, 5.0%–20.0%), for SG 2.0% (95% CI, 0.0%–5.0%), and for FCF 2.0% (95% CI, 1.0%–5.0%) (p
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Basal Cell Carcinoma Arising in Scars of Subcutaneous Port Sites

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Correlation of Suture Diameter With Its Ability to Cut Through an Artificial Skin Model

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imageBACKGROUND Sutures can tear through tissue, but little data exist on the relative ability of different suture gauges and suture types to cut into the skin. OBJECTIVE To quantify the relative ability of various sutures to cut into and tear through the skin. METHODS AND MATERIALS We tested 4 suture types (polypropylene, nylon, polyglactin 910, and poliglecaprone 25) at 2 gauges each (3-0 and 5-0) in their ability to cut into and tear through an artificial skin substitute comprised of a 1-mm thick silicone sheet. The force required to cut into and through the skin substitute was measured using a digital force gauge that generated a force–time curve. The suture diameters were verified using both a precision caliper micrometer and an eyepiece micrometer with the microscope. Statistical analysis was performed using the Student t-test and analysis of variance. RESULTS All 5-0 suture types required less force to cut into and tear through the skin substitute than their 3-0 counterparts. Among each suture gauge, there was no significant difference in tear-through force regardless of the suture type. CONCLUSION Compared with larger gauge sutures, smaller gauge sutures more easily cut into and tear through skin substitute.
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Treatment of Hypertrophic Scarring Attempted Caustic Tattoo Removal

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Treatment of Extramammary Paget Disease and the Role of Reflectance Confocal Microscopy: A Prospective Study

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imageBACKGROUND Extramammary Paget disease (EMPD) poses treatment challenges. Invasive and noninvasive treatment modalities exist with variable success reported. Reflectance confocal microscopy (RCM) is emerging as an adjuvant diagnostic tool. OBJECTIVE To evaluate the treatment of EMPD patients and the role of RCM. METHODS Prospective study. Demographic and tumor characteristics were recorded. Handheld-RCM was performed and correlated with histology. Treatment, clearance, pathology, and follow-up were all recorded. RESULTS Thirty-six EMPD lesions in 33 patients were included. Mean age was 71.7 years, and 23 were men. Mean number of surgical stages needed to clear margins was 1.9 (SD, 0.9; 1.0–3.0 stages), and mean margin needed to clear was 1.8 cm. Reflectance confocal microscopy correlated well with scouting punch biopsies (kappa, 0.93; p
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