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Figure  2: (a and b) The patient is operated in the lateral prone posture, and the 30cm iron rod was removed by the midline posterior fossa approach. The size of the bone window was approximately 5  cm  ×  5  cm. (c) The 25-cm long iron bar was slowly pulled out from the front. There was no hemorrhage during this process. (d) Postoperative CT scan demonstrating the surrounding edema with the drainage tube in  situ. (e and f) The angiography demonstrated that there was no injury to the internal carotid artery or the vertebral artery

Figure  2: (a and b) The patient is operated in the lateral prone posture, and the 30cm iron rod was removed by the midline posterior fossa approach. The size of the bone window was approximately 5  cm  ×  5  cm. (c) The 25-cm long iron bar was slowly pulled out from the front. There was no hemorrhage during this process. (d) Postoperative CT scan demonstrating the surrounding edema with the drainage tube <i>in  situ</i>. (e and f) The angiography demonstrated that there was no injury to the internal carotid artery or the vertebral artery