A Clinical Analysis of Traumatic Subdural Hygroma

ABSTRACT

The authors report a series of 40 cases of traumatic subdural hygroma and discuss the clinical and radiological features, management, surgical results, and pathogenesis. The "simple hygroma" accounted for majority of cases (78%) and among "complex hygroma" cases, subdural hematoma was most often accompanied. Skull fractures was found in 33% of cases. Bilateral subdural hygroma were seen in 67% and delayed onset were noted in 10 cases(25%). Changes in mental status without focal signs of neurologic deficit was noted in over 50% of cases. Although 75% of cases showed full recovery, clinical course marked by persistence of neurologic deficit was noted in 12.5% of cases. Operation was underwent in 72% and simple burr hole drainage was done in most of cases. Reaccumulation rate was relatively high (27.5%) after initial operation. The mortality rate was 12.5.