Abstract
Abstract1. A case is described in which meningitis terminated an apparently convalescent case of acute otitis media and mastoiditis.2. At necropsy a partly organized, partly septic thrombus was found in the superior petrosal sinus adjacent to the involved tympanic cavity, but no direct connection was found between the primary infection and either the thrombosis or the meningitis.3. No case of otitis media or mastoiditis is free from the possibility of cerebral complication until it is entirely healed4. It is suggested that the physical signs which were interpreted as those of brain abscess were possibly due to irritation of the cranial nerves which lay close to the inflammed region, and that this irritation was caused by the same inflammatory process which produced the thrombosis of the superior petrosal sinus.
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