Introduction: Odontoid pathologies constitute a special category because they may lead to instability. Instability is defined by abnormal spinal alignment under physiologic conditions (loads) such as standing, walking, bending, or lifting. Since instability poses a risk of cord damage, surgical interventions may be required for durable long-term stabilization. This study demonstrates operative technique and results of endoscopic endonasal approach to the odontoid.
Methods: We conducted a retrospective study involving 18 patients who underwent endoscopic endonasal odontoidectomy (EEO) due to Craniovertebral pathologies. Demographic data, clinical features of the patients, risk factors, intraoperative and postoperative complications were reported in this series.
Results: Satisfactory outcomes achieved in 16 patients based on comparing modified Rankin scale before and after the surgery (P value= 0.0001). The mean duration for EEO was 232.6 ± 18.8 minutes. The mean blood loss during surgery was 386.67 ± 153.04 ml. The mean duration of hospital stay was seven days. All patients were extubated within a few hours after surgery. Against the backdrop of a successful anterior decompression in the aforementioned cases, intraoperative cerebrospinal fluid (CSF) leakage, postoperative meningitis, and pulmonary thromboembolism have emerged as devastating complications. However, two intraoperative CSF leakages were managed by direct dural repair and fat graft; two patients died due to postoperative meningitis and pulmonary thromboembolism 7 and 4 days after the second surgery.
Conclusion: In conclusion, EEO can be effectively used for anterior decompression of the odontoid pathologies, despite the risk of complications.
Chordoma is an erratic aggressive tumor of the brain that typically involves the clivus. The majority of the clivus chordomas reside in the extradural space. Here, we report a unique case of chordoma arising from the prepontine intradural space without bony involvement and presenting with radiological features typical of an epidermoid cyst on magnetic resonance imaging.
One of the most invasive malignant tumors of the cerebellum is medulloblastoma, which is also the most common malignant tumor of the brain in children. Patients with a recurrent disease following initial treatment have the most unfavorable prognosis. The most common metastasis locations are the spine, the posterior fossa, the bones, and the supratentorium. Late medulloblastoma metastasis in the supratentorial intraventricular region is uncommon. We report here a case with supratentorial seeding.
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