A primary aneurysm in the saphenous vein is very rare. This case study is based on a 55-year-old male patient who applied for general surgery with a complaint of swelling in his left inguinal area, after examinations led to a provisional diagnosis of inguinal hernia. It was decided that surgery was the best option due to the risk of thromboembolism, and pain caused by the condition itself. Confusion with inguinal hernia can affect prognosis. It increases the risk of thromboembolism as well as preventing the chance of early response.