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Abstract：
UNASSIGNED: Deep location and neurovascular structures make access to lesions of the petrous apex a significant challenge. A novel approach for these tumors is the contralateral transmaxillary approach.
UNASSIGNED: A 31-year-old male was evaluated for left abducens nerve palsy. Magnetic resonance imaging (MRI) and computed tomography revealed an enhancing, lytic lesion of the petrous apex with extension to the cavernous sinus and petroclival junction. The patient underwent a combined endoscopic contralateral transmaxillary and endoscopic endonasal transclival approach for resection of the lesion. No new or worsening neurologic deficits were noted following the procedure. Pathology revealed low-grade chondrosarcoma (grade I). Postoperative MRI revealed gross total resection of the lesion. Patient underwent adjuvant radiation therapy at the discretion of radiation oncology.
UNASSIGNED: The contralateral transmaxillary approach to the petrous apex allows for resection of lesions of the petrous apex with the ability to extend the dissection laterally. Excellent results achieved by institutions with advanced extended endoscopic endonasal experience can be reproduced in institutions with less experience. Further characterization of the risks and benefits of this approach is needed.
UNASSIGNED: A 31-year-old male was evaluated for left abducens nerve palsy. Magnetic resonance imaging (MRI) and computed tomography revealed an enhancing, lytic lesion of the petrous apex with extension to the cavernous sinus and petroclival junction. The patient underwent a combined endoscopic contralateral transmaxillary and endoscopic endonasal transclival approach for resection of the lesion. No new or worsening neurologic deficits were noted following the procedure. Pathology revealed low-grade chondrosarcoma (grade I). Postoperative MRI revealed gross total resection of the lesion. Patient underwent adjuvant radiation therapy at the discretion of radiation oncology.
UNASSIGNED: The contralateral transmaxillary approach to the petrous apex allows for resection of lesions of the petrous apex with the ability to extend the dissection laterally. Excellent results achieved by institutions with advanced extended endoscopic endonasal experience can be reproduced in institutions with less experience. Further characterization of the risks and benefits of this approach is needed.
摘要：
未经授权：深部位置和神经血管结构使进入岩尖病变成为一项重大挑战。这些肿瘤的一种新方法是对侧经颌骨入路。
未经证实：一名31岁男性被评估为左展神经麻痹。磁共振成像（MRI）和计算机断层扫描显示增强，岩尖的溶解性病变，延伸至海绵窦和岩斜交界处。该患者接受了内镜对侧经上颌和内镜经鼻经斜入路联合切除病变。手术后没有发现新的或恶化的神经缺陷。病理显示低度软骨肉瘤（I级）。术后MRI显示病灶完全切除。根据放射肿瘤学的判断，患者接受了辅助放射治疗。
UNASSIGNED：岩尖的对侧经上颌入路可以切除岩尖的病变，并能够横向扩展夹层。具有先进的鼻内镜扩展经验的机构可以在经验较少的机构中复制出色的结果。需要进一步描述这种方法的风险和收益。
未经证实：一名31岁男性被评估为左展神经麻痹。
UNASSIGNED：岩尖的对侧经上颌入路可以切除岩尖的病变，并能够横向扩展夹层。
