the results of this analysis show that bilateral epidural hematomas may develop slowly indicate that they occur with traumatic forces predominantly oriented in the anteroposterior direction , have fewer overlying fractures associated with them than unilateral epidural hematomas , and commonly contain venous blood . the differences between unilateral and bilateral epidural hematomas in direction of injuring forces , frequency of overlying skull fracture , and type of hemorrhage suggests that varying mechanisms may be responsible for production of these hematomas .
C0238154
epidural hematomas
C0019080
hemorrhage