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Updated: Aug 15, 2026

Minimally Invasive Endoscopic Intracerebral Hemorrhage Evacuation
Published on: October 15, 2021
Insights
This study reports 64 cases of chronic subdural hematoma in Helsinki between 1967-1973. Incidence was 1.72/100,000 yearly, rising significantly in older adults.
Area of Science:
- Neurology
- Neurosurgery
- Forensic Medicine
- Epidemiology
Background:
- Chronic subdural hematoma (CSH) is a significant neurological condition.
- Accurate incidence data is crucial for public health planning and resource allocation.
- Previous epidemiological studies on CSH in Helsinki were limited.
Purpose of the Study:
- To determine the incidence of chronic subdural hematoma in Helsinki.
- To analyze the age-specific incidence of CSH.
- To provide epidemiological data for clinical and public health purposes.
Main Methods:
- Retrospective analysis of 64 diagnosed chronic subdural hematoma cases in Helsinki residents from 1967-1973.
- Inclusion of surgically treated cases from Neurology and Neurosurgery departments.
- Inclusion of autopsy-diagnosed cases from the Forensic Medicine department.
Main Results:
- A total of 64 cases of chronic subdural hematoma were identified over a seven-year period.
- The overall incidence was calculated at 1.72 per 100,000 population per year.
- Incidence increased with age, reaching 7.35 per 100,000 per year in individuals aged 70-79.
Conclusions:
- Chronic subdural hematoma affects the population of Helsinki with a notable incidence.
- The risk of chronic subdural hematoma significantly increases in elderly populations.
- This epidemiological data highlights the importance of considering CSH in geriatric patients.
Abstract:
During the seven year period 1967-1973 a total of 64 residents of the City of Helsinki were diangosed as having chronic subdural haematomas. Forty of the patients were diagnosed during life at the Departments of Neurology and Neurosurgery, University of Helsinki, and treated surgically. Twenty four were diagnosed at autopsy at the Department of Forensic Medicine, University of Helsinki, at which the autopsies in virtually all cases of subdural haematoma in Helsinki are performed. The total of 64 cases gives an incidence of 1.72/100,000/year in the average population, the incidence increasing steeply with advancing age up to 7.35/100,000/year in the age groups 70-79 years.
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