ABSCESS of the brain is a rare complication of sinusitis in general and an extremely rare complication of ethmoiditis in particular. In a series of 14,534 autopsies at the London Hospital, Evans1 found 194 cases of brain abscess, and in only 14 of these was the condition rhinogenic. Onodi2 reported 4 cases of rhinogenic brain abscess in a series of 13,400 autopsies, while Courville and Rosenvold3 reported 2 cases of brain abscess in their series of 15,000 autopsies. The vast majority of these abscesses were due to infection of the frontal sinus. In Eagleton's4 series of 104 abscesses of the frontal lobe, only 9 were due to infection limited to the ethmoid sinus. The author has found no record of brain abscess due to infection limited to the ethmoid sinus in the literature during the past seventeen years.
Sinusitis is a very common medical entity, and
KLER JH. ABSCESS OF THE FRONTAL LOBE SECONDARY TO ETHMOIDITIS. Arch Otolaryngol. 1949;49(2):125–134. doi:https://doi.org/10.1001/archotol.1949.03760080003001
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