Aoyama I, Kondo A, Nin K, Shimotake K
Department of Neurosurgery, Kitano Medical Research Institute and Hospital, Osaka, Japan.
Surg Neurol. 1991 Jul;36(1):32-6. doi: 10.1016/0090-3019(91)90129-w.
Two cases of spontaneous pneumocephalus, which developed after ventriculoperitoneal shunt procedures for severe hydrocephalus caused by benign brain tumors, are reported. In both cases there was no previous history of cerebrospinal fluid leakage. Operation revealed that both patients had many small defects of the dura mater and the bone in the middle cranial fossa, which were plugged by necrotic brain tissue. These defects were remote from the sites of the original tumors but may have been produced by long-standing raised intracranial pressure, and they presumably allowed air to enter after intracranial pressure was reduced by shunting. Repair of the defects prevented further intracranial air retention.
本文报告了两例自发性气颅病例，这两例气颅均发生于因良性脑肿瘤导致的严重脑积水行脑室腹腔分流术后。两例患者既往均无脑脊液漏病史。手术发现，两名患者的中颅窝硬脑膜和颅骨均有许多小缺损，这些缺损被坏死脑组织堵塞。这些缺损远离原发肿瘤部位，但可能是由长期颅内压升高所致，推测在分流降低颅内压后，空气得以进入颅内。修复这些缺损可防止颅内空气进一步潴留。
