Background: The prevalence of diabetes mellitus (DM) is increasing worldwide. Thereby, an increasing rate of patients with DM are subjecting to spine surgery. Reviewing the literature, a higher rate of surgery-related complications is reported in DM patients. There is no prospective study comparing the outcomes of lumbar fusion surgery in patients with and without DM. We aimed to investigate whether DM is associated with worse patientreported outcomes, lower fusion rate, and higher complication rate in subjects undergoing spinal lumbar fusion surgery. Methods: Forty-eight subjects with DM (DM group) and 48 controls (control group) were recruited. Data regarding age, duration of diabetes, comorbidities, fasting blood sugar, HbA1c, insulin dependence, duration of operation and the volume of bleeding, and the number of infused packed cell were recorded for all patients. Pain and functional status of the patients using the visual analogue scale (VAS) and Oswestry Disability Index (ODI) were measured before operation and 2 weeks, 6 months, and 1 year after lumbar spinal fusion surgery. Using lumbar computed tomography scan and anteroposterior and lateral x-ray 1 year after the surgery, fusion was assessed. Results: Fusion rate after 1 year was 78% in the control group and 53% in the DM group (P ¼ .02). Patients with DM had higher VAS scores comparing to controls 1 year after the operation, but the difference was not significant (P ¼ .07). However, comparing the functional status of the subjects, significantly higher ODI scores were found among DM patients comparing to controls (P ¼ .002). Conclusion: Rate of fusion among diabetic patients who undergo lumbar spinal fusion surgery is lower than healthy controls. Spine surgeons should consider this to provide the best possible facilities during the surgery to increase the fusion rate in these patients.
Background and Importance: Liponeurocytoma is a rare tumor of the CNS. Some of its prominent features include low neuronal proliferation with foci of lipomatous differentiation. So far, 70 reports on cases of brain liponeurocytoma have been published. Most of them were located in the cerebellar hemisphere, but only 7 cases of primary Cerebellopontine Angle (CPA) liponeurocytoma have been reported. Case Presentation: We presented a 27-year-old woman with a 6-month progressive headache and dizziness. More recently, she developed progressive hearing loss and ataxia. Pre-operative MRI of the brain demonstrated a heterogeneous solid extra-axial lesion in the right CPA with hydrocephalus. The operation was performed via the retro sigmoid approach. Histopathological diagnosis was confirmed as liponeurocytoma. No radiotherapy was performed. The patient was followed up for two years. There were no signs of recurrence. Conclusion: Liponeurocytoma is a rare tumor. In most of the cases, it is presented in the cerebellum, and the CPA as the primary location of this tumor is extremely uncommon. Typically, surgery is the treatment of choice for these lesions. If the tumor is subtotal, radiotherapy after operation and resection can also be advantageous.
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