In syphilis of the optic nerve there are definite changes, and the course of extension of the pathologic processes can be partly observed with an ophthalmoscope. However, the syphilitic changes of the ear, particularly of the inner ear, are more complex and irregular and not so widely recognized.
The clinical experiences have not so far been widely verified anatomically; in fact, to date even the classification of terminology has proved difficult. Since the points of attack for syphilis in the ear are so multiple and different, it seems that the problem of classification would have a valuable solution if the methods of aural examination were improved and the localization of the pathologic process in the inner ear could be substantiated.
At present either the classifications are made according to Alexander,1 who primarily divided the condition into syphilitic neuro-otitis interna, or through a form conditioned by endarteritis syphilitica, or a toxic
TAMARI M. ATROPHIC DEGENERATION OF THE COCHLEA IN SYPHILITIC GUMMA OF THE MEDULLA OBLONGATA. Arch Otolaryngol. 1941;34(5):1014–1022. doi:10.1001/archotol.1941.00660041088012
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