View clinical trials related to Bowen's Disease.
Filter by:Methyl aminolaevulinate photodynamic therapy (MAL-PDT) is an effective treatment for Bowen's disease (BD) of the lower extremities. Er:YAG ablative fractional laser (AFL) treatment removes the stratum corneum to increase MAL uptake and may improve efficacy. However, no studies have directly compared the efficacy of MAL-PDT with and without Er:YAG AFL in treating BD of the lower extremities in Asians.
The aim of this study is to provide this investigational drug to patients who cannot be optimally treated with conventional therapies and to collect efficacy and safety data on the use of Metvix PDT in subjects with field actinic keratoses, large/multiple superficial basal cell carcinomas (BCCs) or Bowen's disease.
The purpose of this study is to identify the most optimal therapy for Bowen's disease: excision versus Photodynamic therapy.
Patients on immunosuppressive therapy, e.g. organ recipients, have a higher occurrence of AK than the untreated population. Keratotic lesions (i.e. AK lesions and warts) in this population is highly associated with development of SCC also with 10 times higher mortality rate because of SCC than expected. The risk of developing skin cancer, predominantly SCC and BCC, increases with graft survival time and the length of immunosuppressive treatment period. The higher risk of developing skin malignancy and more aggressive skin malignancies in this population, indicate the need for early removal of these pre-malignant lesions. In this study, two contralateral areas (5x10 cm2) with skin lesions within the patient will be compared. One area will receive Metvix PDT at defined intervals and the other will receive lesion specific treatment at the discretion of the investigator. The primary end-point will be the accumulated number of new lesions during the study and number of AK lesions that show complete response 3 months after baseline. Secondary endpoints will be number of BCC lesions that show complete response, number of recurrent lesions, assessment of cosmetic outcome and safety.
- Double blinded, randomized, placebo controlled trial of imiquimod for the treatment of histologically proven Bowens disease of the head and neck. - Null hypothesis: No difference in histologic clearance rates of patients with head or neck Bowens treated with imiquimod versus placebo. - Outcome: Histologic clearance of Bowens disease at T=14 weeks.
We popose that arsenic-induced lymphocytes dysfunction plays an important role in biological mechanisms of arsenical Bowen’s disease.