It is not quite ten years since Chiari,1 Marchand2 and others described a condition found post mortem in the aorta which they named mesaortitis. They pointed out the frequency with which this condition was associated with manifestations of syphilis or with a definite history of the disease. Chiari found that a large proportion of paretics showed this affection and Marchand pointed out its constant association with aneurysm of the aorta. Their conclusions gained support from the work of Schmorl,3 Wright and Richardson,4 and others who from 1907 to 1909 reported the presence of spiral organisms morphologically similar to the Spirochœta pallida in aortas showing mesaortitis. Since then, these observations have been confirmed by numerous workers. The association of mesaortitis with the other signs of syphilis and the finding of the Spirochœta pallida in the lesions have given this condition definite recognition as a result of syphilitic
CUMMER CL, DEXTER R. THE RELATION OF AORTITIS TO SYPHILIS, AND THE IMPORTANCE OF ITS RECOGNITION. JAMA. 1912;LIX(6):419–422. doi:10.1001/jama.1912.04270080101004
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