A 59-year-old man suffering from abdominal pain and having high acute phase reactants was admitted to hospital. Aortitis was discovered incidentally with magnetic resonance that was performed for another prediagnosis. Steroid and azathioprine combination was unsuccessful for remission and preventing relapses. However, steroid and methotrexate combination was successful for clinical and laboratory remissions. Also, the iliac artery occlusion was improved with stent implementation. In general, isolated idiopathic aortitis is a very rare entity and hard to be diagnosed. In this case, we describe a patient with aortitis that has only abdominal pain and treated with steroid and methotrexate combination.