The necrosis and uncontrast enhancement of tumor are postoperative characteristic imaging findings. The postoperative complications are hydrocephalus and edema in pons and/or cerebellar.

• 肿瘤内坏死无强化为术后特征性的影像学表现，术后并发症在影像上表现为脑积水及桥脑和/或小脑水肿。