Overview Twelve Month Follow-Up of CP0108 Status: Completed Trial end date: 2016-04-01 Target enrollment: Participant gender: Summary The purpose of this study is to determine the long-term safety and efficacy of Levulan PDT in subjects with multiple actinic keratosis of the upper extremities who received treatment as part of the DUSA CP0108 study. Details Lead Sponsor: DUSA Pharmaceuticals, Inc.Treatments: Aminolevulinic AcidPharmaceutical Solutions