ADVANCES IN THE UNDERSTANDING OF RHINOLOGIC AND OTOLOGIC CONDITIONS RELATED TO THE NERVOUS SYSTEM: A Critical Survey of the Literature

ABSCESS OF THE BRAIN  Bacteriologic Findings.McFarlan²⁴³ reports the results of bacteriologic studies of 48 cases of abscess of the brain.Site of Abscess.—Forty-two patients had a single abscess; 6 had more than one. Of those with a single abscess, 3 had a cerebellar abscess, 18 an abscess of the frontal lobe, 5 one of the parietal lobe, 15 one of the temporal lobe, and 1 had an abscess of the occipital lobe.Probable Source of Infection.—Disease of the ear was the source of infection in 18 patients, sinusitis in 7, infection of the lungs in 7, trauma (penetrating injury) in 3, staphylococcic septicemia in 1, subacute bacterial endocarditis in 1 and puerperal sepsis in 1. In 4 patients the source of the infection of the brain was unknown.Duration of Symptoms.—The duration of the symptoms of abscess was known in 47 cases; in 15 it was less than one