Characteristics and Postoperative Outcomes for High Cervical versus Subaxial Cervical Intradural Extramedullary...

Area of Science:

• Neurosurgery
• Spine Surgery
• Oncology

Background:

• High cervical intradural extramedullary tumors are rare and surgically challenging due to proximity to neural structures and vertebral arteries.
• No prior studies have directly compared high cervical to subaxial cervical tumors.

Purpose of the Study:

• To compare the characteristics and surgical outcomes of high cervical versus subaxial cervical intradural extramedullary spinal tumors.
• To elucidate unique features and treatment results for high cervical tumors.

Main Methods:

• Retrospective study of patients undergoing cervical intradural extramedullary tumor excision.
• Patients divided into high cervical and subaxial cervical groups.
• Comparison of clinical, radiological, and outcome variables, including limb power and Nurick classification recovery trajectories.

Main Results:

• Eighty-four patients (90 tumors) analyzed; 40 in high cervical, 44 in subaxial group.
• High cervical tumors more frequently neurofibromas and bilateral, associated with neurofibromatosis type 1.
• High cervical group showed greater initial improvement in limb power and Nurick classification post-surgery.

Conclusions:

• High cervical intradural extramedullary tumors present with higher rates of bilaterality and association with neurofibromatosis type 1.
• Surgical resection in the high cervical region is safe and achieves favorable outcomes despite complex anatomy.