Abstract
Background: Aortic infection is comparatively rare, but the course is sudden. Case: A 75-year-old man was given a diagnosis of polymyalgia rheumatica 6 year previously, and had been taking steroid drugs. A month previously, he was admitted to our hospital with chest back pain, and we diagnosed acute type B aortic dissection. Result: We suspected aortic dissection associated with infection because of high fever and inflammatory reaction around the aorta at CT scan. Then antimicrobial treatment was started. Salmonella was detected by blood culture. Five weeks later after admission, the sudden waist back pain was appeared. Aortic re-dissection and right leg ischemia were identified on CT scan. The Right axillary artery-right femoral artery bypass was performed. Conclusion: Aortic infection is comparatively rare, but has a sudden course. In Stanford B type aortic dissection, strict control of blood pressure and antibiotic therapy are important. However, the risk of rupture, rapid expansion and re-dissection of the aorta is very high. It is necessary to perform surgical treatment promptly when some complications of aortic dissection occur.
