Mastoiditis in infancy is not an uncommon occurrence, and much enlightening work has been done concerning infection of the mastoid antrum in infants by Marriott,1 Jeans and Floyd,2 Alden,3 Dean,4 Floyd,5 Sidbury6 and others.7 One of the dreaded dangers in mastoid infection is a complicating sinus thrombosis, because it may occur without characteristic signs or symptoms and can remain unrecognized. Especially is this true in the so-called painless type of mastoiditis, as pointed out by Kopetzky.8
Lateral sinus thrombosis occurring as a complication of mastoiditis in children has been reported by many investigators,9 but as a complication during infancy it is rare, and search of the literature reveals no patient younger than the one in the case reported here.
Kopetzky10 mentioned the case of a child of 14 months, with recovery, in a series of twenty cases of sinus thrombosis,
KLEIN IJ, LEDERER M. LATERAL SINUS THROMBOSIS COMPLICATING MASKED MASTOIDITIS: REPORT OF A CASE WITH SECONDARY SUBARACHNOID HEMORRHAGE. Am J Dis Child. 1930;40(5):1045–1052. doi:10.1001/archpedi.1930.01940050107013
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