In November 1936 I had occasion to diagnose a tumor of the mastoid process which was proved histologically to be a compact osteoma. On account of the uncommon occurrence of osteomas in this region it was decided to investigate this case and the subject in general as thoroughly as possible. A survey of the literature on the subject has been made and is published in order to review certain facts which have enabled me to submit a classification of such tumors and to suggest a cause for some of them. It is necessary to state that the term "osteoma" as used in this paper refers to a benign, circumscribed, usually slow growing tumor of bony tissue and that only such a tumor affecting the mastoid process of the temporal bone is to be particularly considered. Osteomas assume various formations, and as a result certain terms such as "hyperostosis," "exostosis," "endostosis"
E. A. STUART. OSTEOMA OF THE MASTOIDREPORT OF A CASE WITH AN INVESTIGATION OF THE CONSTITUTIONAL BACKGROUND. Arch Otolaryngol. 1940;31(5):838–854. doi:10.1001/archotol.1940.00660010852006
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