The Experts below are selected from a list of 240 Experts worldwide ranked by ideXlab platform
Roy G. Geronemus - One of the best experts on this subject based on the ideXlab platform.
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tattoo formation from absorbable synthetic suture and successful removal with q switched Ruby Laser
Dermatologic Surgery, 1996Co-Authors: Leonard J Bernstein, David A Palaia, David Bank, Roy G. GeronemusAbstract:background Traumatic tattoos result from accidental or unintentional deposition of exogenous pigment within injured skin. Pigments may consist of heavy metals, vegetable matter, or commercial dyes. objective The clinical and histologic description of a traumatic tattoo resulting from a surgical procedure using undyed, braided, synthetic, absorbable suture material and its removal with the Q-Switched Ruby Laser (694 nm, 28 nsec). methods The pigmented linear lesion was biopsied and processed using standard histological methods. Subsequently, the area was treated on two occasions with the Q-Switched Ruby Laser. results The pigmented lesion was completely removed with the Q-Switched Laser treatments. conclusion We report on the occurrence of a traumatic tattoo resulting from synthetic suture material and complete removal with the Q-Switched Ruby Laser.
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Treatment of Small and Medium Congenital Nevi With the Q-Switched Ruby Laser
Archives of dermatology, 1996Co-Authors: Heidi A Waldorf, Arielle N.b. Kauvar, Roy G. GeronemusAbstract:Background: The Q-Switched Ruby Laser has been used successfully to treat a variety of benign pigmented lesions. In this study, congenital nevi (diameter, ≤5 cm) in 18 prepubertal children were treated with the Q-Switched Ruby Laser. Observations: Photographic evaluation revealed an average of 57% clearance of pigmentation in all treated nevi by the fourth treatment session and an average maximum clearance of 76% after approximately eight sessions. Greater than 90% clearance of pigment was attained in five patients. Partial repigmentation was seen in all patients who were followed up after discontinuation of therapy. Findings from histopathologic studies, obtained from one patient, revealed a reduction of nevus cells in the papillary dermis and upper reticular dermis that correlated with clinical lightening. There was no such reduction in the lower reticular dermis. Side effects were limited to transient erythema and hypopigmentation. Conclusions: The Q-Switched Ruby Laser effectively lightens and may clear pigmentation and eliminate superficial nevus cells from small and medium congenital nevi safely without scarring. However, these results are not permanent. The Q-Switched Ruby Laser may be a viable alternative for providing cosmetic improvement for unresectable lesions, but it should not be considered definitive treatment. Additional studies are needed to address the long-term results of this therapy. (Arch Dermatol. 1996;132:301-304)
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Treatment of small and medium congenital nevi with the Q-Switched Ruby Laser
1996Co-Authors: Heidi A Waldorf, Arielle N.b. Kauvar, Roy G. GeronemusAbstract:Background : The Q-Switched Ruby Laser has been used successfully to treat a variety of benign pigmented lesions. In this study, congenital nevi (diameter, ≤5 cm) in 18 prepubertal children were treated with the Q-Switched Ruby Laser. Observations : Photographic evaluation revealed an average of 57% clearance of pigmentation in all treated nevi by the fourth treatment session and an average maximum clearance of 76% after approximately eight sessions. Greater than 90% clearance of pigment was attained in five patients. Partial repigmentation was seen in all patients who were followed up after discontinuation of therapy. Findings from histopathologic studies, obtained from one patient, revealed a reduction of nevus cells in the papillary dermis and upper reticular dermis that correlated with clinical lightening. There was no such reduction in the lower reticular dermis. Side effects were limited to transient erythema and hypopigmentation. Conclusions : The Q-Switched Ruby Laser effectively lightens and may clear pigmentation and eliminate superficial nevus cells from small and medium congenital nevi safely without scarring. However, these results are not permanent. The Q-Switched Ruby Laser may be a viable alternative for providing cosmetic improvement for unresectable lesions, but it should not be considered definitive treatment. Additional studies are needed to address the long-term results of this therapy.
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Rapid Response of Traumatic and Medical Tattoos to Treatment with the Q-Switched Ruby Laser
Plastic and Reconstructive Surgery, 1993Co-Authors: Robin Ashinoff, Roy G. GeronemusAbstract:: Traumatic tattoos can be very difficult to remove. Excision is often not possible because of the extent of the tattoo, and dermabrasion may not be able to reach the area of pigment without significant scarring. Six patients with traumatic (n = 5) or medical (n = 11) tattoos were treated with the Q-Switched Ruby Laser with complete or nearly complete resolution after one to six treatments without cutaneous scarring or permanent pigmentary alteration.
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q switched Ruby Laser therapy of nevus of ota
Archives of Dermatology, 1992Co-Authors: Roy G. GeronemusAbstract:• Background. —The Q-Switched Ruby Laser has been demonstrated to provide selective photothermolysis of pigmented tissue at a wavelength of 694 nm and a pulse width of 40 ns with dermal penetration. It was used to treat 15 patients with nevus of Ota involving the face with an age range of 6 to 52 years. Other methods of treatment for the nevus of Ota have either left scarring or were ineffective. The clinical efficacy of this Laser treatment was evaluated in a comparative photographic analysis. Observations. —Complete clearing was noted in four of the 15 patients and a minimum of 50% lightening of the original color in the remaining 11. Ten of the 15 patients were Asian, two were white, two were Hispanic, and one was Indian. The energy fluence used varied between 6 and 10 J/cm 2 , and the number of treatments ranged from 1 to 7. Significant lightening or clearing was found at the higher energy ranges of 9 to 10 J/cm 2 with significantly less lightening noted at the lower energy range of 6 to 8.5 J/cm 2 . No scarring was noted in any of the 15 patients, and some isolated hypopigmentation was noted in one of the subjects. Transient postinflammatory hyperpigmentation of 2 months' duration was noted in only one patient. Conclusion. —Q-Switched Ruby selective photothermolysis appears to be an effective and safe method of lightening or removing nevus of Ota.
Joop M Grevelink - One of the best experts on this subject based on the ideXlab platform.
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treatment of nevus spilus with the q switched Ruby Laser
Dermatologic Surgery, 1997Co-Authors: Joop M Grevelink, Rowena Bonoan, Chitralada Vibhagool, Salvador González, Ernesto GonzalezAbstract:Background Q-Switched Lasers have shown to be effective in the removal of unwanted cutaneous pigmentation. Benign cutaneous pigmented lesions represent a heterogeneous group. Nevus spilus is a relatively uncommon pigmented lesion characterized by dark, hyperpigmented dots scattered over a tan-colored macule. Objective A cohort of patients with nevus spilus was studied to determine the effects of Q-Switched Ruby and Q-Switched Nd:YAG Laser treatment on clearance of pigment and to evaluate potential side effects. Methods Six patients with nevus spilus were treated with the Q-Switched Ruby Laser (QSR). In addition, three lesions received a test treatment with the Q-Switched Nd:YAG (QSYAG) Laser at 532 or 1064 nm. The results of treatment were documented during follow up visits. Results Most lesions showed a near-complete or complete response to Laser treatment. In one case partial hyperpigmentation occurred after treatment and in one case no follow-up could be obtained. In the three cases that received both QSR and QSYAG Laser treatment, the QSR Laser was shown to be the most effective in removing pigment. Conclusion Nevus spilus can be treated effectively with the Q-Switched Ruby Laser.
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Treatment of small nevomelanocytic nevi with a Q-Switched Ruby Laser
Journal of the American Academy of Dermatology, 1997Co-Authors: Chitralada Vibhagool, H. Randolph Byers, Joop M GrevelinkAbstract:Background: Small nevomelanocytic nevi are common and some are of cosmetic concern. Conventional therapy may cause a scar or permanent hypopigmentation. Objective: Our purpose was to determine whether selective photothermolysis of pigmented cells by Q-Switched Ruby Laser treatment removes small nevomelanocytic nevi in a nonscarring fashion. Methods: Twelve patients with 18 small nevomelanocytic nevi were treated with a Q-Switched Ruby Laser (694 nm, 28 nsec) at fluences of 8 J/cm 2 . Biopsy specimens were obtained after treatment at varying time intervals. Results: Twelve lesions (67%) showed a complete response and six lesions (33%) had a partial response. The only adverse sequela observed was mild fibrosis of the papillary dermis, without loss of papillary architecture. Conclusion: The Q-Switched Ruby Laser is effective in removing small melanocytic nevi. However, some might recur depending on the depth of the nevomelanocytic nests.
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Treatment of small nevomelanocytic nevi with a Q-Switched Ruby Laser.
Journal of the American Academy of Dermatology, 1997Co-Authors: Chitralada Vibhagool, H. Randolph Byers, Joop M GrevelinkAbstract:Small nevomelanocytic nevi are common and some are of cosmetic concern. Conventional therapy may cause a scar or permanent hypopigmentation. Our purpose was to determine whether selective photothermolysis of pigmented cells by Q-Switched Ruby Laser treatment removes small nevomelanocytic nevi in a nonscarring fashion. Twelve patients with 18 small nevomelanocytic nevi were treated with a Q-Switched Ruby Laser (694 nm, 28 nsec) at fluences of 8 J/cm2. Biopsy specimens were obtained after treatment at varying time intervals. Twelve lesions (67%) showed a complete response and six lesions (33%) had a partial response. The only adverse sequela observed was mild fibrosis of the papillary dermis, without loss of papillary architecture. The Q-Switched Ruby Laser is effective in removing small melanocytic nevi. However, some might recur depending on the depth of the nevomelanocytic nests.
Chitralada Vibhagool - One of the best experts on this subject based on the ideXlab platform.
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treatment of nevus spilus with the q switched Ruby Laser
Dermatologic Surgery, 1997Co-Authors: Joop M Grevelink, Rowena Bonoan, Chitralada Vibhagool, Salvador González, Ernesto GonzalezAbstract:Background Q-Switched Lasers have shown to be effective in the removal of unwanted cutaneous pigmentation. Benign cutaneous pigmented lesions represent a heterogeneous group. Nevus spilus is a relatively uncommon pigmented lesion characterized by dark, hyperpigmented dots scattered over a tan-colored macule. Objective A cohort of patients with nevus spilus was studied to determine the effects of Q-Switched Ruby and Q-Switched Nd:YAG Laser treatment on clearance of pigment and to evaluate potential side effects. Methods Six patients with nevus spilus were treated with the Q-Switched Ruby Laser (QSR). In addition, three lesions received a test treatment with the Q-Switched Nd:YAG (QSYAG) Laser at 532 or 1064 nm. The results of treatment were documented during follow up visits. Results Most lesions showed a near-complete or complete response to Laser treatment. In one case partial hyperpigmentation occurred after treatment and in one case no follow-up could be obtained. In the three cases that received both QSR and QSYAG Laser treatment, the QSR Laser was shown to be the most effective in removing pigment. Conclusion Nevus spilus can be treated effectively with the Q-Switched Ruby Laser.
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Treatment of small nevomelanocytic nevi with a Q-Switched Ruby Laser
Journal of the American Academy of Dermatology, 1997Co-Authors: Chitralada Vibhagool, H. Randolph Byers, Joop M GrevelinkAbstract:Background: Small nevomelanocytic nevi are common and some are of cosmetic concern. Conventional therapy may cause a scar or permanent hypopigmentation. Objective: Our purpose was to determine whether selective photothermolysis of pigmented cells by Q-Switched Ruby Laser treatment removes small nevomelanocytic nevi in a nonscarring fashion. Methods: Twelve patients with 18 small nevomelanocytic nevi were treated with a Q-Switched Ruby Laser (694 nm, 28 nsec) at fluences of 8 J/cm 2 . Biopsy specimens were obtained after treatment at varying time intervals. Results: Twelve lesions (67%) showed a complete response and six lesions (33%) had a partial response. The only adverse sequela observed was mild fibrosis of the papillary dermis, without loss of papillary architecture. Conclusion: The Q-Switched Ruby Laser is effective in removing small melanocytic nevi. However, some might recur depending on the depth of the nevomelanocytic nests.
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Treatment of small nevomelanocytic nevi with a Q-Switched Ruby Laser.
Journal of the American Academy of Dermatology, 1997Co-Authors: Chitralada Vibhagool, H. Randolph Byers, Joop M GrevelinkAbstract:Small nevomelanocytic nevi are common and some are of cosmetic concern. Conventional therapy may cause a scar or permanent hypopigmentation. Our purpose was to determine whether selective photothermolysis of pigmented cells by Q-Switched Ruby Laser treatment removes small nevomelanocytic nevi in a nonscarring fashion. Twelve patients with 18 small nevomelanocytic nevi were treated with a Q-Switched Ruby Laser (694 nm, 28 nsec) at fluences of 8 J/cm2. Biopsy specimens were obtained after treatment at varying time intervals. Twelve lesions (67%) showed a complete response and six lesions (33%) had a partial response. The only adverse sequela observed was mild fibrosis of the papillary dermis, without loss of papillary architecture. The Q-Switched Ruby Laser is effective in removing small melanocytic nevi. However, some might recur depending on the depth of the nevomelanocytic nests.
H. Randolph Byers - One of the best experts on this subject based on the ideXlab platform.
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Treatment of small nevomelanocytic nevi with a Q-Switched Ruby Laser
Journal of the American Academy of Dermatology, 1997Co-Authors: Chitralada Vibhagool, H. Randolph Byers, Joop M GrevelinkAbstract:Background: Small nevomelanocytic nevi are common and some are of cosmetic concern. Conventional therapy may cause a scar or permanent hypopigmentation. Objective: Our purpose was to determine whether selective photothermolysis of pigmented cells by Q-Switched Ruby Laser treatment removes small nevomelanocytic nevi in a nonscarring fashion. Methods: Twelve patients with 18 small nevomelanocytic nevi were treated with a Q-Switched Ruby Laser (694 nm, 28 nsec) at fluences of 8 J/cm 2 . Biopsy specimens were obtained after treatment at varying time intervals. Results: Twelve lesions (67%) showed a complete response and six lesions (33%) had a partial response. The only adverse sequela observed was mild fibrosis of the papillary dermis, without loss of papillary architecture. Conclusion: The Q-Switched Ruby Laser is effective in removing small melanocytic nevi. However, some might recur depending on the depth of the nevomelanocytic nests.
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Treatment of small nevomelanocytic nevi with a Q-Switched Ruby Laser.
Journal of the American Academy of Dermatology, 1997Co-Authors: Chitralada Vibhagool, H. Randolph Byers, Joop M GrevelinkAbstract:Small nevomelanocytic nevi are common and some are of cosmetic concern. Conventional therapy may cause a scar or permanent hypopigmentation. Our purpose was to determine whether selective photothermolysis of pigmented cells by Q-Switched Ruby Laser treatment removes small nevomelanocytic nevi in a nonscarring fashion. Twelve patients with 18 small nevomelanocytic nevi were treated with a Q-Switched Ruby Laser (694 nm, 28 nsec) at fluences of 8 J/cm2. Biopsy specimens were obtained after treatment at varying time intervals. Twelve lesions (67%) showed a complete response and six lesions (33%) had a partial response. The only adverse sequela observed was mild fibrosis of the papillary dermis, without loss of papillary architecture. The Q-Switched Ruby Laser is effective in removing small melanocytic nevi. However, some might recur depending on the depth of the nevomelanocytic nests.
Bruce M. Achauer - One of the best experts on this subject based on the ideXlab platform.
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q switched Ruby Laser treatment of oculodermal melanosis nevus of ota
Plastic and Reconstructive Surgery, 1996Co-Authors: Cheng Jen Chang, Stuart J Nelson, Bruce M. AchauerAbstract:The Q-Switched Ruby Laser at 694 nm, a wavelength well absorbed by melanin relative to other optically absorbing structures in skin, causes highly selective destruction of pigment-laden cells. In addition, the 20- to 40-ns pulse duration produced by this Laser approximates the thermal relaxation tim
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Traumatic tattooing : Treatment with the Q-Switched Ruby Laser : A case study
Annals of plastic surgery, 1996Co-Authors: Bruce M. Achauer, Victoria M. VanderkamAbstract:This case report details the successful treatment of extensive, facial traumatic tattooing in an adult male. The Q-Switched Ruby Laser was utilized. It is demonstrated to be an excellent tool for the treatment of traumatic tattooing. The results achieved are superior to other methods and complications reported with other treatment options are minimized.
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Treatment of traumatic tattoos by Q-Switched Ruby Laser.
Plastic and Reconstructive Surgery, 1994Co-Authors: Bruce M. Achauer, Victoria M. Vander Kam, J. Nelson, Robert ApplebaumAbstract:The Q-Switched Ruby Laser is currently used in the treatment of amateur and professional decorative tattoos. The present study documents the clinical management and follow-up of 12 subjects with traumatic tattoos treated with the Q-Switched Ruby Laser. The results of this study indicate that an excellent clinical outcome can be achieved with substantial removal of the targeted foreign pigmented matter while potential adverse effects are significantly reduced. Hypopigmentation, which occurred in four patients (33.3 percent), was temporary and resolved spontaneously in all subjects within 6 months of Laser exposure. There was no hypertrophic scarring, atrophy, or induration seen in any of the subjects treated with the Q-Switched Ruby Laser. (Plast. Reconstr. Surg. 93: 318, 1994.)
