NON-SUPPURATIVE INVOLVEMENT OF THE LABYRINTH IN THE COURSE OF MUMPS.

Abstract

Mumps is ordinarily a disease of so mild a character that but little note is taken of its complications aside from the consideration of orchitis. The complication discussed in this paper, while not so common as orchitis, is much more serious as concerns function. The cases I purpose to discuss are those in which the labyrinth is involved in the course of mumps, not by a suppurative process, nor by the extension of a middle-ear process to the labyrinth, nor by the extension of an inflammatory process in the vicinity of the ear, but apparently by metastasis or by a primary localization of the disease in the labyrinth. I have found in the literature reports on forty-nine cases that seem to me to fulfill these conditions. To these I wish to add the following reports of cases. The first is one which I examined with Dr. Shambaugh in the Central