Osteomas of the mastoid are of so much interest on account of their rarity and their deforming possibilities and as etiologic factors in complications rising from the growths themselves as well as from surgical intervention that it seems to me that all cases should be described with a detailed account of the symptoms, the complications observed before, during or after any operative procedure and the final result.
There are three distinct types of osteoma of the mastoid: first, the firmly attached, nonmovable type; second, the movable type, which some times has a pseudarthrosis (both of these are alive); and a third type, small, hard, alive, movable and unattached, of which there are only 2 cases—Amberg's, which is contained in the literature, and my own case 2, which I am reporting in this paper. In Amberg's case there was possibly an attached pedicle; in my case there was no pedicle, but
SIMPSON WL. OSTEOMA OF THE MASTOID: REPORT OF TWO CASES. Arch Otolaryngol. 1940;32(4):642–661. doi:10.1001/archotol.1940.00660020647003
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