Dear Colleagues and Fellow Scientists,

Following the tradition initiated 30 years ago, the 16th IPA Congress will bring together researchers and clinicians working in all fields of photodynamic therapy (PDT) and photodiagnosis (PD) to foster the scientific development of this area and contribute to the widespread use of the best clinical practices. IPA congresses are the privileged forums to present new advances in photodynamic therapy and photomedicine in general. A variety of research and clinical advances will be addressed in ca. 130 invited lectures and contributed talks and as many posters. IPA2017 is poised to become a reference on photodynamic therapy meetings and you are welcome to be part of it. IPA 2017 will be held in the historical center of Coimbra, classified as World Cultural Heritage by the UNESCO. Coimbra attract many visitors, enjoys a pleasant weather, and can be easily reached from the international airports of Lisbon or Porto. Join us at one of the most ancient existing universities in continuous operation in the world. We look forward to seeing you in IPA 2017!

Luis Arnaut

Conference Chair, University of Coimbra, Portugal