Extremely rare case; Venous aneurysm

Venous aneurysm is very rare espacially inferior vena cava (IVC) aneurysm is extremely rare. Etiology is not clear and risk factors can be inflammatory disease, thrombosis, trauma and long term complication of long term right heart failure. Angiography with computer tomography (CTA), magnetic resonance angiography (MRA) and convantionel venography can use for diagnose. 30 years old male patient admistered to clinic for lower abdominal pain for a month. Largest diameter in subhepatic region and left renal vein were 67mm and 26mm respectively. Literature there were limited numbers of case described. Because of this reason there was no quide or no adopted treatment aprroach was defined. Hardest and challenging part is giving the decision of treatment.