99 research outputs found
Comparison of Characteristics of Acquired Bilateral Nevus of Ota-like Macules and Nevus of Ota According to Therapeutic Outcome
Both acquired bilateral nevus of Ota-like macules (ABNOM) and nevus of Ota are characterized by the presence of dermal melanocytes. There are no differences in the method of treatment, however, postinflammatory hyperpigmentation (PIH) develops more often in ABNOM than in nevus of Ota following treatment. We investigated the differences in the development of PIH after treatment between ABNOM and nevus of Ota, and the histopathologic differences in the PIH. A total of 82 patients with ABNOM (n=47) and nevus of Ota (n=35) were treated with Q-switched alexandrite laser and followed up 2 weeks and 3 months later. Biopsies were performed on lesional skin before treatment. The distribution and the amount of melanin pigments were visualized with Fontana-Masson stain, and the distribution and the depth of melanocytes were measured by GP-100 (NK1-beteb) stain. Clinically, there was more erythema and PIH in ABNOM than in nevus of Ota. Histopathologically, intradermal melanocytes were clustered in groups and dispersed perivascularly in ABNOM, while melanocytes were scattered evenly throughout the dermis in nevus of Ota. Both groups show that when there is a statistically significant number of melanocytes in the perivascular area, erythema and PIH occur after laser therapy. In conclusion, indirect vessel injury in addition to perivascular clustering melanocytes might be considered the cause of increased PIH after treatment in ABNOM
Treatment of Acquired Bilateral Nevus of Ota-Like Macules (Horiʼs Nevus) with a Combination of the 532 nm Q-Switched Nd
Potassium Titanyl Phosphate Laser Turbinate Reduction in the Management of Allergic Inferior Turbinate Hypertrophy: Our Experience
A Retrospective Study on the Efficacy and Complications of Q-Switched Alexandrite Laser in the Treatment of Acquired Bilateral Nevus of Ota-Like Macules
Treatment of acquired bilateral nevus of Ota-like macules (Hori's nevus) using 1064-nm Q-switched Nd:YAG laser with low fluence
Novel treatment of Hori′s nevus: A combination of fractional nonablative 2,940-nm Er:YAG and low-fluence 1,064-nm Q-switched Nd:YAG laser
Q-switched 532 nm Nd:YAG laser therapy for physiological lip hyperpigmentation: novel classification, efficacy, and safety
Combined use of intense pulsed light and Q-switched ruby laser for complex dyspigmentation among asian patients
Combined Therapy Using Q-Switched Ruby Laser and Bleaching Treatment With Tretinoin and Hydroquinone for Acquired Dermal Melanocytosis
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