RT Journal A1 DRURY DW T1 MAstoiditis-actinomycosis JF Journal of the American Medical Association JO Journal of the American Medical Association YR 1929 FD September 28 VO 93 IS 13 SP 974 OP 978 DO 10.1001/jama.1929.02710130014005 UL http://dx.doi.org/10.1001/jama.1929.02710130014005 AB The inflammatory processes which attack the mucous and periosteal lining of the mastoid cells are seldom primary; they generally occur from the extension of an inflammation in the tympanic cavity. An inflammation of the mastoid process is seldom secondary to diseases of the external auditory canal. Traumatic mastoiditis is among the rarest lesions. In short, the mastoid process seems to be immune to acute disease except as a result of infection from a diseased tympanum.Historically, the subject matter of this paper is of interest in that the name streptothrix is probably invalid as a generic designation among the bacteria. Many authors, however, have used streptothrix (Corda) in place of actinomyces (Hartz). The action of the infection on the body, clinically, is practically the same in two cases.In 1890, Ginsberg1 reported the case of a business man, aged 30, admitted to a hospital, scarcely able to speak. Trismus