Authors report a very rare case of splenic vein aneurysm in a 34-year-old female patient. She underwent investigation for upper abdominal pain which was not related to eating. Diagnostic workup revealed a thin wall saccular splenic vein aneurysm of 40 mm in diameter which caused an indentation of the posterior wall of the pancreas. She underwent surgery, a tangential resection was carried out preserving the continuity of the splenic vein and spleen. The patient had an uneventful postoperative course and she was discharged on the 5th postoperative day.