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Evaluation of the efficacy of the Q switched ruby laser in the treatment of benign pigmented skin lesions
Iranian Journal of Dermatology. 2007; 9 (4): 324-329
in English | IMEMR | ID: emr-83144
ABSTRACT
It is possible to use light sources such as lasers to destruct melanosomes and treat pigmented skin lesions. One of the most commonly used laser systems is Q switched ruby laser with a wave-length of 694 nm. This study was performed to evaluate the efficacy of the Q switched ruby laser in the treatment of pigmented skin lesions including lentigines [simplex or solar] and cafe-au-lait macules. After physical examination for ruling out the possibility of malignancy by two dermatologists, patients were treated with Q switched ruby laser. Response to treatment was categorized in four groups of equal interval according to the 0-100% lesion lightening. Ninety patients including 81 patients with solar lentigo and 9 cases of lentigo simplex were recruited into this study. Mean st and ard deviation [SD] of the number of treatment sessions for solar lentigo and lentigo simplex cases were 1.0 0.5 and 3.6 1.3 respectively. Although the mean of sessions was increased in darker skin types, there was no statistically significant difference between different skin types [p=0.335]. In addition, there was no significant relation between mean treatment sessions and location of the lesions [p=0.685]. Cure rate was 100% in all lentigo cases and after a mean SD of 8.7 2.3 months follow up there was no recurrence. Also, there was neither pigmentary change nor folliculitis during treatment. In 7 cases with cafe-au-lait macules, the mean SD score of improvement was 2.4 0.8, which was achieved after 3.1 0.4 treatment sessions. In 6 cases whom were followed up for 10.2 3.1 months, despite primary disappearance, recurrence of cafe-au-lait macules was observed. It seems Q switched ruby laser is an appropriate method for treatment of lentiginous lesions in Caucasians with Fitzpatrick's skin types II to IV
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Index: IMEMR (Eastern Mediterranean) Main subject: Melanosomes / Lasers / Lentigo Limits: Humans Language: English Journal: Iran. J. Dermatol. Year: 2007

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Index: IMEMR (Eastern Mediterranean) Main subject: Melanosomes / Lasers / Lentigo Limits: Humans Language: English Journal: Iran. J. Dermatol. Year: 2007