Maria Cristina Mansur MD - PDF document

Maria Cristina Mansur, M.D. Maria Cristina Mansur, M.D.Medical Director, Department ofDermatology Centro Cient’fico deProfessor, Universidade Federal de Juiz de ForaÑMG, Brazil Introduction Ephelides, or freckles, are epidermal-ed lesions common in exposureeas. Freckles are often difficult to treat, as patients tend to refreckle with additionaly respond hed laser treatments; but consid-ering that longer wavelength lasers for hairget epidermal melanin, it hat hair removal lasers wouldalso be effective in treating these superficial Method Case 1 Ð Patient skin type I Fitzpatrick witheckles on the face. Two laser treatmentswere made at monthly intervals, using a 12 mm spot size at a fluence 25 J/cm55 nm wavelength, 3 ms pulse durations, Ð Patient skin type II Fitzpatrick with freckles on the upper back. Previousattempts to treat with cryotherapy producedunsatisfactory results. Three laser treat-ments were made at monthly intervals,using a 12 mm spot size at a fluence In both cases, the GentleLASE alexandritelaser from Candela was used with the DCD. Results The ephelides (freckles) darkened in colorely after treatment and scaled offeek, resulting in significant clinicalimprovement. The postapplication photoswing the laste instructed to use sunscreen protection (of at least xposure Discussion Immediate, ablative photothermolysis of ed lesions occurs with Q-Switchednanosecond pulsesnanosecond pulseswever, lasers with longer wavelengths are alsoeventually effective in treating these types obably because the target is more the melanocyte versus themelanosome, which is the Q-switchedlaserÕs target.Greater efficacy was observed using theGentleLASEÕs smaller spot sizes, as a laserÕsenergy is not introduced as deeply into skintissue as spot size decreases. GentleLASETreatment of Ephelides (Freckles) GentleLASE is a registered trad

emark of Candela Corporation. Dynamic Cooling Device and DCD are trademarks. o find out more about Candela and its products, contact your authorized Candela representative or call toll free wor8008001-2013. Dial USA country code if calling internationally. www.gentlelase.com Printed in the USA.11/03 0920-23-0815 Rev. 01 Candela Corporation 530 Boston Post RoadWayland, MA 01778, USA5085086378008001-2013www.candelalaser.com There are many cost-benefits by treatingephelides with longer wavelength lasers,y if they are already on-site andbeing used to treat other applications.Treating freckles is another example of the versatility of the GentleLASE laser from Candela. References 1. Rosenbach A; Lee SJ, Johr RH. ÒTreatment of medium-brown solar lentigines using an alexandritelaser designed for hair reduction.팠 Arch Dermatol 447-8, 2002.2. Rashid T, Hussain I, Haider M, Harron TS. ÒLasertherapy of freckles and lentigines with quasi-continuous, frequency-doubled, Nd:YA532 nm532 nmlaser in Fitzpatrick skin type IV: A 24 month followup.팠 J Cosmet Laser Ther 2002; 4:81-85. 3. Kawada A, Shiraishi H, Asai M et al. ÒClinicalimprovement of solar lentigines and ephelides with an intense pulsed light source.팠 Dermatol ad A, Kono T, Dover J. ÒClinicalapplication of lasers in Asians.팠 Dermatol Surg 5. Lam AY, Wong DS, Lam LK, Ho WS, Chan HH. 툀A retrospective study on the efficacy and andrite laser in the treatment of acquired bilateral nevus of Ota-like macules.팠 Dermatol Surg 2001; 27:937-41. 6. Somoyos K, Boonchu K, Somsak K, Pannadda L, Leopairut J. ÒCopper vapour laser treatment of 135:964-96. Figure 2ÑCase 1 post-treatment . Chan HH, Fung WKK, Ying SY, et al. ÒAn ino trial comparing the use of different typeseodymium: Yttrium-Aluminum-net (Nd:YAG) lasers in the treatment offacial lentigines in oriental patients.팀 Dermatol Surg 2000; 26:743-749