The Registry seeks to advance care for individuals with PPB and DICER1 related conditions through collection and shared of information and through development of new ways to find and treat these conditions The International Pleuropulmonary Blastoma (PPB)/DICER1 Registry is a resource, providing information on PPB, DICER1, and DICER1 associated conditions. Part of the Registry's objective is to encourage the collection of data to seek the cause of PPB and its possible genetic links, as well as collaborate with physicians, patients and patient families from around the world. If you or your child or family member is diagnosed with a condition associated with DICER1 or found to have a DICER1 gene variation, we would be grateful for your participation in the Registry, for it is through the contributions patients and families, that much has been learned about these rare conditions.