Mycotic aortic aneurysm induced by Klebsiella pneumoniae successfully treated by in-situ replacement with rifampicin-bonded prosthesis: report of 3 cases.

Mycotic aortic aneurysm caused by Klebsiella pneumoniae (K. pneumoniae) is extremely rare and 3 cases of K. pneumoniae-induced mycotic aortic aneurysm are present, 2 of which were located in the aortic arch and the other in the suprarenal abdominal aorta. Urgent surgery was performed for 2 cases because of impending aneurysmal rupture and progressive septic shock, whereas elective surgery was performed after radical antibiotic chemotherapy for the other case. In-situ reconstruction with rifampicin-bonded prosthetic grafts was performed, and no infective complications have occurred in any of the cases.