RelayPro Thoracic Stent-Graft in Subjects With Thoracic Aortic Aneurysms and Penetrating Atherosclerotic Ulcers

Inclusion Criteria: * Subject must be ≥ 18 years of age * Subject has specified disease in his/her descending thoracic aorta. * Subject have anatomical compliance for the device specified for both access vessels and treatment area. * Subject must be willing to comply with the follow-up evaluation schedule. * Subject (or Legally Authorized Representative) agrees an Informed Consent Form prior to treatment. Exclusion Criteria: * Subject has specified disease of the thoracic aorta which is not included in the trial, for example: aortic dissection, intramural hematoma, traumatic injury or transection, aortic false aneurysm, ruptured aneurysm. * Subject anatomy with significant stenosis, calcification, thrombus or tortuosity. * Subjects with specified compromised circulation. * Subjects with specified prior procedures. * Subjects with allergy to contrast media or device components. * Subjects with disease, for example: suspected connective tissue disorder, specified coagulation disorders, specified coronary artery disease, severe congestive heart failure, stroke and/or Myocardial Infarction (MI) as specified, specified pulmonary disease, specified renal failure. * Subjects that are pregnant or planning to become pregnant during the course of the study.