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On March 16 of the present year I was called on to open the mastoid of Fulton M., aged 5, who had suffered from acute suppurative otitis media for two weeks. There was decided swelling of the skin over the bone. After making the usual incision through the skin, a small fistula was found in the mastoid fossa which passed down through the cortex. After removing the bone, granulation tissue was encountered, but the peculiar doughy sensation imparted to the probe warned against the use of the curette. The soft tissue was carefully uncovered from the mastoid fossa to the tip, and everywhere presented the same granular appearance. Its position was directly back of the posterior wall of the canal. There was no pulsation of the mass. In trying to make a positive diagnosis a portion of the canal wall was removed and even then it was impossible to tell
JOHNSTON RH. MARKED MALPOSITION OF THE SIGMOID SINUS. JAMA. 1908;L(21):1688. doi:10.1001/jama.1908.25310470026002a
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