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In this paper I shall consider the surgical treatment of the mastoid process involved in acute and chronic purulent otitis media, relate a few impressions gathered while a resident at the New York Eye and Ear Infirmary and attempt to add to the general fund of information already compiled on the subject.
I shall consider the simple, the modified radical and the radical mastoidectomy with particular reference to indications, procedures and results. My information has been accumulated from my experience in the clinics of the New York Eye and Ear Infirmary, particularly in 33 cases in which I performed mastoidectomy. Of these 33 operations, 14 were of the radical, 4 of the modified radical and 15 of the simple type.
First, I shall consider the simple mastoidectomy. Here the duration of the discharge and the date of onset of the symptoms are of the utmost importance. The distinction between the