During the summer of 1923, a group of clinicians were puzzling over the condition of a patient who had been admitted to the neurosurgical service of the Los Angeles General Hospital, suspected of having a tumor of the brain. Localization of the lesion by ordinary methods of neurologic examination proved baffling, but was finally accomplished by the inflation of the ventricles with air. The night before exploratory craniotomy was to have been performed, the patient suddenly died, and at the autopsy an unsuspected type of chronic subdural hemorrhage was discovered. At the time this case was unique in my experience, although since then six additional cases have been encountered, which, together with the first, form the basis of this report.
These cases differ symptomatically and pathologically from the meningeal type of epidural or subdural hemorrhage which usually follow injuries of the head, and more closely resemble the picture of pachymeningitis
RAND CW. CHRONIC SUBDURAL HEMATOMA: REPORT OF SEVEN CASES. Arch Surg. 1927;14(6):1136–1165. doi:10.1001/archsurg.1927.01130180013002
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