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Contralateral extra-axial hematoma following surgery for head injury--report of two cases.

Two patients developed acute, contralateral extra-axial (epidural and subdural) hematomas immediately after surgery for head trauma. One patient deteriorated rapidly following surgery. In the other case, brain swelling was noted intraoperatively following decompression. The specific pre-, intra-, and postoperative features that may indicate the formation of a contralateral hematoma are discussed.