World Neurosurg
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Epithelioid osteoblastoma of the cranium is extremely rare and can mimic other etiologies on radiographic imaging, pathology, and symptomatology. ⋯ Epithelioid osteoblastoma of the skull base is exceedingly rare but should be included in the differential diagnoses of all extra axial tumors. Preoperative radiographic clues are limited, and final diagnosis relies solely on accurate pathologic examination. A diagnosis of epithelioid osteoblastoma should be considered for all cranial bone-based tumors, as an incorrect diagnosis of another radiographic and histologic mimic could lead to the patient receiving unnecessary and harmful neoadjuvant/adjuvant chemotherapy or radiotherapy.
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Outcomes of Posterior Thoracic Corpectomies for Metastatic Spine Tumors: An Analysis of 90 Patients.
To retrospectively analyze the outcomes and complications of patients with metastatic thoracic spinal tumors (MTTs) who underwent posterior corpectomies. ⋯ Our results suggest that posterior thoracic corpectomies for MTTs have a reasonable complication rate with favorable outcomes.
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Case Reports
New Radiologic Findings of Hypertrophic Olivary Degeneration in 2 Patients with Brainstem Lymphoma.
Hypertrophic olivary degeneration (HOD) is a rare neurological condition of trans-synaptic degeneration caused by disruption of the dentatorubro-olivary pathway. We present new radiologic findings of HOD in 2 cases of brainstem lymphoma. ⋯ Hyperperfusion and contrast enhancement in the IO were found in 2 patients with HOD. These findings may be confused with recurrence of malignant tumor.
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The effectiveness of surgical microvascular decompression (MVD) of the vertebral artery (VA) for treating conditions such as trigeminal neuralgia or hemifacial spasm is well known. However, the use of MVD for a case in which the posterior inferior cerebellar artery (PICA) is directly compressing the high cervical cord has not been reported. ⋯ MVD of the PICA was performed, and the patient experienced rapid improvement of myelopathy. The patient immediately improved postoperative day 1 and was doing well at his 1-year follow-up. This is a rare case of the PICA directly compressing the cervical cord and causing myelopathy. MVD of the PICA resulted in good patient recovery.
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Percutaneous endoscopic lumbar discectomy (PELD) is regarded as an alternative treatment for lumbar disc herniation. Although the indication for PELD has expanded with remarkable evolution of the technique, sometimes unexpected complications have occurred during PELD. We report 3 cases of de novo disc prolapse during PELD. ⋯ Although the incidence was very low (0.3%) and the lesions were nonsymptomatic, de novo disc prolapse may be associated with an inside-out PELD technique. Discography and insertion of the obturator should be handled gently. The possibility of de novo disc prolapse should be kept in mind when performing PELD.