Abdomen and retroperitoneum 1.9 Retroperitoneum and great vessels : Case 1.9.4 Aneurysms November 15, 2018 Abdomen and retroperitoneum 1.9 Retroperitoneum and great vessels : Case 1.9.4 Aneurysms Abdominal Aortic Aneurysm Michigan MedicineAbdominal Aortic Aneurysms Now@NEJM Now@NEJMNew Page 2 [www.stritch.luc.edu]What causes thinning of the blood vessels? Quora Share