1972 Volume 15 Issue 2 Pages 145-150
There were enomous number of reports concerning congenital deafness, but unfortunately the exact pathologic findings of the deafness were not still fully understood.
It is a purpose of this paper to present new pathologic findings in a case of deafmute, and the findings were compared with the known inner ear lesions of congenital deafness and other sensory neural deafness. These findings were, for instance, dilated cochlear duct, calcified thrombi in striate vessels, abnormal tectorial membrane, conspicuous spiral ganglion atrophy, and these might be important in clarifying true pathology of congenital deafness and in classifying it.