View clinical trials related to Lentigo.
Filter by:Hypothesis - The developments of solar lentigine and melasma are due to mutations in keratinocytes that drive the production and transfer of pigment from melanocytes to keratinocytes.
This is a prospective, longitudinal, uncontrolled study with follow-up for 5 years.Patients having undergone surgical excision of lentigo maligna (LM) or lentigo maligna melanoma (LMM) will be invited to this study. Eligible patients will start treatment with imiquimod 6 weeks after the excision, the treatment will last for up to 12 weeks. Inflammatory reactions and the occurrence of residual lesions will be documented. The healing effect will be determined (initial clearance rate) 20 weeks after start of treatment with imiquimod. All patients who were enrolled (=exposed to imiquimod in this study) will be followed up for 5 years or until recurrence of the LM or LMM
Background - Lentigines are usually the first sign of photoaging and may produce a significant impact on patients' quality of life. - There is no a treatment of choice for this condition. - Solar lentigines and melasma share similar physiopathologic characteristics. - The triple combination (TC) cream (hydroquinone 4%, tretinoin 0.05%, and fluocinolone acetonide 0.01%) has been effective and safe for the treatment of melasma and other hyperpigmented lesions. Hypothesis * The TC cream will be effective and safe for the treatment of solar lentigines on the back of the hands. Patients and methods - 22 patients with solar lentigines were selected and their right hand or left hand were selected at random to be treated with either TC cream or tretinoin 0.05% cream once daily for up 12 weeks. - Patients were instructed to apply both creams on the whole back of the hand and not only in the lentigines, and to use a broad-spectrum sunscreen (SPF 50+, UVA-PF 28) daily in both hands. - Clinical assessments of Target Lesion Pigmentation, Physician's Global Assessment of Improvement and a Subject's Self-Assessment questionnaire were collected for data analysis at weeks 4, 8, and 12 after starting the treatment and 3 month post-treatment. - Statistical methods: The ordinally scaled efficacy measures underwent rank transformation and were analyzed by analysis of variance to test the null hypothesis of no differences among treatments. We performed Mann-Whitney and Wilcoxon tests and the XLSTAT 2009 software was used.
This phase II trial is studying the side effects and how well dinaciclib works in treating patients with stage IV melanoma. Dinaciclib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth.
The purpose of this study is to image pigmented skin lesions suspicious for melanoma with an imaging technology called in vivo reflectance confocal microscopy. This technology uses low intensity laser to image below the surface of the skin. The confocal images of the suspicious skin lesion will be examined. The goal of this study is to compare the results of the confocal image examination to the pathologic diagnosis of the skin lesion. The technique being evaluated in this study uses reflectance confocal microscopy in vivo. The term "in vivo" means in/on a living subject. In this study you will be the living subject and the confocal microscope will be placed on your skin to look at your skin lesion. The confocal microscope uses a weak laser light and a sophisticated lens to image the individual cells that make up the skin. Your lesion will be photographed with high resolution photography.
This study is designed as a randomized, prospective study to test the efficacy of imiquimod plus tazarotene in the treatment of LM. Eligible and consented patients will be randomized to one of two treatment groups: 1) topical imiquimod group, or 2) topical imiquimod combined with topical tazarotene group. All patients will undergo a staged surgical excision with rush permanent sections to confirm negative histologic margins. This will be followed by a surgical repair of the defect and long-term follow-up of five years to rule out recurrences. Both groups will have a polygonal excision using 2mm margins per stage.
Cohort CNC-PPNAD will be investigated with clinical, genetic, biological and imaging work-up every year during 3 years. Cohort L-MC will be investigated clinically at inclusion and a PERKAR1A genotype will be performed.
The purpose of this study is a comparison of efficacy and side effects of Q-switched Ruby laser treatment for solar lentigines in two different skin types II and IV.
This phase II trial is studying how well AZD2171 works in treating patients with recurrent or stage IV melanoma. AZD2171 may stop the growth of tumor cells by blocking blood flow to the tumor and by blocking some of the enzymes needed for cell growth.