TI - Ruptured Collateral Venous Aneurysm Associated with IVC Agenesis Resulting in a Massive Retroperitoneal Hematoma AU - Erok, B. AU - Win, N.N. AU - Önder, H. SO - European Archives of Medical Research 2022;38:308-309. DO - 10.4274/eamr.galenos.2022.27879