An Analysis of Chronic Subdural Hematoma

ABSTRACT

The authors analyzed 125 cases with chronic subdural hematoma admitted to the Department of Neurosurgery, Masan Koryo General Hospital from March 1987 until February 1992. The results obtained were as follows. 1) The male to female ratio was 4.91 and the incidence was predominant in the patients whose ages were over 50. 2) Antecedent history of head trauma was found in 79 cases(63%). 3) In 70 cases(56%), the density of hematoma shown on CT scan was low. In patients of under 60 years of age, the shape of hematoma was planoconvex, crescent, biconvex in the order of frequency whereas in patients of over 60, the sequence changed to biconvex, crescent, planoconvex. 4) In our series, the patients younger than 60 were managed either with burr hole drainage(40 cases) or craniotomy(34 cases), while the patients older than 60 were treated with burr hole drainage(45 cases) and craniotomy(6 cases). 5) Total mortality rate was 2.4%(3 cases). We have found a significant association between the neurologic grade at admission and prognosis of a patient.