Abstract
A 72-year-old man who had a slight fever for three months presented, because he also started to have low backpains and left lower limb. Computed tomography showed a 40-mm diameter left buttock mass which might have an inflammation. It was diagnosed as left thrombosed persistent sciatic artery (PSA) aneurysm with inflammation. He was treated surgically only by mass reduction of thrombotic PSA aneurysm without a bypass procedure, because we thought his pains came from compression of the sciatic nerve and there was strong adhesion with the aneurysm and the sciatic nerve. After that, his symptoms disappeared, and he was discharged on 7 POD. It is important to preserve the sciatic nerve in terms of the anatomical features. If the patients have pain of the lower limbs, we should assess whether the cause is ischemia or compression of the nerve.
