Inflammation of the middle layer of the aorta.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Examples from the Web for mesaortitis
Historical Examples of mesaortitis
Microscopically the process is found to be a subacute inflammation of the media, which has been called a mesaortitis.
Mesaortitis is the primary lesion and acts as a locus minoris resistenti where an aneurysm forms.