Mycobacterium chelonae as the probable cause of acute contained rupture of a biological composite graft. Aortic infection

We present the case of a patient with acute aortic dissection, 19 months after replacement of the aortic valve and the ascending aorta due to an aortic dissection. Auramine-rhodamine staining showed acid-fast bacilli but classical culture and molecular tests failed to identify any organism. Metagenomic analysis indicated infection with Mycobacterium (Mycobacteroides) chelonae.