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Background: A new intraoperative mobile device, called Airo computed tomography (CT), is becoming increasingly used in surgery adding to the current most widespread intraoperative imaging in form of the O-arm CT device. Intraoperative CT imaging has the advantage to reduce the discomfort derived from the patient's transfer from the operative room to the radiological unit and also the time of control or time of reposition in cases of lead misplacement. This is the first rapport on Airo CT device application in DBS surgery. Methods: In our retrospective study, we have evaluated 52 patients who had DBS from October 2020 to November 2021. All patients underwent a preoperative brain magnetic resonance imaging (MRI) and a stereotactic brain CT scan. We performed an intraoperative CT scan with the Airo device. Images were subsequently transferred to the neuronavigation system (BrainLab cranial software) and merged with preoperative planning images to confirm correct position of leads. Five aspects were compared: patient and surgeon comfort, surgical planning, parenchymal visualization, radioscopic lead visualization, and costs. Results: Both imaging devices are easy-to-use, precise, and safe and have their pros and cons. Conclusion: This is the first study reporting on CT-Airo application in DBS. We advise that if only DBS is considered, the O-arm application might be more suitable. If in addition to DBS cranial surgery is performed, the Airo device is more suitable. [ABSTRACT FROM AUTHOR]

Background: Anterior cervical surgery has a widespread use. Despite its popularity, this surgery can lead to serious and life-threatening complications, and warrants the attention of skilled attending spinal surgeons with many years of experience. Methods: We retrospectively evaluated postoperative complications occurring in 110 patients who underwent anterior cervical surgery (anterior cervical discectomy without fusion, anterior cervical discectomy and fusion, and anterior cervical disc arthroplasty) between 2013 and 2020. These operations were performed by an either an attending surgeon with 30 years' experience versus a novice neurosurgeon (NN) with <5 years of training with the former surgeon. Complications were variously identified utilizing admission/discharge notes, surgical reports, follow-up visits, and phone calls. Complications for the two groups were compared for total and specific complication rates (using the Pearson's Chi-square and Fisher's test). Results: The total cumulative complication rate was 15.4% and was not significantly different between the two cohorts. The most frequent postoperative complication was dysphagia. Notably, there were no significant differences in total number of postoperative instances of dysphagia, dysphonia, unintended durotomy, hypoasthenia, and hypoesthesia; the only difference was the longer operative times for NNs. Conclusion: Surgeons' years of experience proved not to be a critical factor in determining complication rates following anterior cervical surgery. [ABSTRACT FROM AUTHOR]

Solitary fibrous tumor is a tumor originating from the mesenchymal cells, which occurrence in the central nervous system is extremely rare and was described in few patients as to yet. We report on a 53-years old male patient presenting with right upper limb radicular pain and ipsilateral limbs paresis, who was diagnosed with a cervical spinal lesion which, after surgical resection, resulted to be a solitary fibrous tumor (SFT). We discuss imaging, clinical and histopathological findings to allow considering this tumor early in the differential diagnosis. [ABSTRACT FROM AUTHOR]

[10] The CM/Pf is mostly taken into consideration in patients with a predominant tic phenomenology and a low comorbidity charge, whereas the nucleus accumbens (NAc), the ventral striatum, the anterior limb of the internal capsule, and the antero-medial limbic section of the globus pallidus internus (a-GPi) are preferred in patients with a predominant comorbidity burden. Since then, we implanted eight TS patients at the antero-medial GPi, while for the same time lapse, we treated only one TS patient at the Voi-CM/Pf. © 2018 Surgical Neurology International | Published by Wolters Kluwer- Medknow OPEN ACCESS For entire Editorial Board visit: http://www.surgicalneurologyint.com SNI: Stereotactic Editor: Antonio F. DeSalles, M.D., University of California at Los Angeles, Los Angeles, CA, USA Editorial After 19 years of deep brain stimulation in Tourette's syndrome: From multiple targets to one single target? In 2011, Martínez-Fernández et al. performed pallidal DBS in five patients, three patients were implanted in the limbic a-GPi, and the other two patients in the sensorimotor postero-ventral GPi. [Extracted from the article]

Background: Leva-dopa (L-dopa) is the gold-standard treatment for Parkinson's disease (PD). Deep brain stimulation is generally reserved for patients who become refractory to l-dopa treatment. Case Description: We present a male patient with a 9-year course of PD who at 53 years of age preferred deep brain stimulation (DBS) of the subthalamic nucleus over initial l-dopa treatment. The patient argued that he wanted to avoid the serious adverse effects of l-dopa, which would have presented within his time of full professional activity. DBS resulted in significant motor improvement lasting for 6 years without l-dopa treatment. Conclusion: Large multicentre-based international trials with long follow-ups are needed to answer the effectiveness of early DBS in PD. [ABSTRACT FROM AUTHOR]

This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License, which allows others to remix, tweak, and build upon the work noncommercially, as long as the author is credited and the new creations are licensed under the identical terms. [ABSTRACT FROM AUTHOR]

Background: Deep brain stimulation (DBS) is an established therapy for movement disorders, such as Parkinson's disease (PD), dystonia, and tremor. The efficacy of DBS depends on the correct lead positioning. The commonly adopted postoperative radiological evaluation is performed with computed tomography (CT) scan and/or magnetic resonance imaging (MRI). Methods: We conducted a retrospective study on 202 patients who underwent DBS from January 2009 to October 2013. DBS indications were PD, progressive supranuclear palsy, tremor, dystonia, Tourette syndrome, obsessive compulsive disorder, depression, and Huntington's disease. Preoperatively, all patients underwent brain MRI and brain CT scan with the stereotactic frame positioned. The lead location was confirmed intraoperatively with CT. The CT images were subsequently transferred to the Stealth Station Medtronic and merged with the preoperative planning. On the first or second day after, implantation we performed a brain MRI to confirm the correct position of the lead. Results: In 14 patients, leads were in suboptimal position after intraoperative CT scan positioning. The cases with alteration in the Z-axis were corrected immediately under fluoroscopic guidance. In all the 14 patients, an immediate repositioning was done. Conclusions: Based on our data, intraoperative CT scan is fast, safe, and a useful tool in the evaluation of the position of the implanted lead. It also reduces the patient's discomfort derived from the transfer of the patient from the operating room to the radiological department. However, intraoperative CT should not be considered as a substitute for postoperative MRI. [ABSTRACT FROM AUTHOR]

Background: Progressive supranuclear palsy (PSP) is a neurodegenerative disease due to mitochondrial dysfunction. The PSP syndrome presents generally with gait disorder, Parkinsonism, ophthalmoparesis and cognitive alteration. Few reports exist on deep brain stimulation (DBS) in patients with atypical Parkinsonism. The aim of our study was to evaluate further the potential role of DBS in PSP. Case Description: We report three patients with PSP with long-term follow up undergoing DBS. Two patients had right peripedunculopontine nucleus (PPN) stimulation and one patient had simultaneous right PPN and bilateral globus pallidus internus DBS. DBS of the PPN alone or combined with globus pallidus internus (GPi ) determined an improvement in gait and a reduction in falls sustained over time. Combined target stimulation (GPi-PPN) was correlated with better clinical outcome than single target (PPN) DBS for PSP. Conclusions: Although few data on DBS for PSP exist, reported clinical results are encouraging. DBS might be considered as an alternative therapeutic option for patients with PSP presenting with relevant gait imbalance and frequent falls, who fail to respond to pharmacological treatment. Larger cohorts with longer follow-ups are needed to evaluate more exhaustively the efficacy of DBS in PSP. [ABSTRACT FROM AUTHOR]

Background: Paragangliomas (PGs) are very rare neuroendocrine tumors that can be found in unusual locations such as the spinal canal. Some PGs may be endocrinologically active, containing neurotransmitters such as noradrenaline, adrenaline, and serotonin. This can lead to unexpected neurotransmitter release during the removal of PGs, leading to a hypertensive crisis., Case Description: We present two patients who underwent surgical removal of a secretory filum terminale PG., Conclusion: If laboratory tests are suggestive of a secretory tumor, surgery should include anesthesiologic preparation similar to cases of pheochromocytoma., Competing Interests: There are no conflicts of interest, (Copyright: © 2023 Surgical Neurology International.)

Background: Skin erosion/infections due to deep brain stimulation hardware are highly worrisome complications. They can lead to the removal of the entire deep brain stimulation device, and consequently hold the whole treatment in otherwise pharmacologically refractory patients. Several techniques have been used such as C-shape skin incision and dual floor burr hole or single passage of connecting cables to reduce the incidence of skin complications., Methods: In this paper, we describe our experience in 209 patients using a dual-floor burr hole technique to reduce skin adverse effects., Conclusion: The dual floor burr hole technique is a safe technique with a low incidence of skin erosions and complications., Competing Interests: All authors certify that they have no affiliations with or involvement in any organization or entity with any financial interest (such as honoraria; educational grants; participation in speakers’ bureaus; membership, employment, consultancies, stock ownership, or other equity interest; and expert testimony or patent-licensing arrangements), or non-financial interest (such as personal or professional relationships, affiliations, knowledge or beliefs) in the subject matter or materials discussed in this manuscript.

Background: Intraforaminal disc herniations at the L5-S1 level are extremely surgically challenging lesions. Intracanal approaches frequently require partial or total facetectomy, which may lead to instability. Solely extraforaminal approaches may offer limited visualization of the more medial superiorly exiting and inferiorly exiting nerve roots; this approach is also more complicated at L5-S1 due to the often large L5 transverse process and the iliac wing., Methods: Nine patients with intraforaminal L5-S1 disc herniations, foraminal stenosis, or synovial cysts underwent contralateral interlaminar approaches for lesion resection. Preoperative and postoperative visual analog scale scores were evaluated, and complications were reviewed., Results: All 9 patients demonstrated immediate postoperative clinical improvement. None of the patients exhibited complications and none developed instability or neuropathic disorders., Conclusions: Although the number of cases in our sample was very small (9 in total), the contralateral interlaminar approach appeared to effectively address multiple degenerative L5-S1 foraminal pathologies. Large studies are needed to further evaluate the pros and cons of this approach.

Background: A rare cause of spinal cord compression is spinal arachnoid cysts. Symptoms are caused by spinal cord compression, however, asymptomatic patients have been also reported. Treatment options depend upon symptom severity and clinical course., Case Description: We report the case of a 47-year-old patient who developed an intramedullary arachnoid cyst after removal of an intradural extramedullary cyst., Conclusion: Surgery should be considered early in a symptomatic disease course. Longstanding medullary compression may reduce the possibility of neurological recovery as well as secondary complications such as intramedullary cyst formation.

Background: Gilles de la Tourette Syndrome (GTS) is a complex neuropsychiatric disorder, characterized by chronic motor and vocal tics, associated in 50-90% of cases with psychiatric comorbidities. Patients with moderate and severe clinical picture are treated with psychotherapy and pharmacological therapy. Deep brain stimulation (DBS) is reserved for pharmacological refractory GTS patients. As GTS tends to improve with time and potentially resolves in the second decade of life, the major concern of DBS in GTS is the age at which the patient undergoes surgical procedure. Some authors suggest performing DBS after 18 years, others after 25 years of age., Case Description: We present a 25-year-old patient with GTS, who was aged 17 years and was treated with thalamic DBS. DBS resulted in progressive and sustained improvement of tics and co-morbidities. After 6 years of DBS treatment, it was noted that the clinical improvement was maintained also in OFF stimulation setting, so it was decided to keep it off. After 2 years in off-setting and stable clinical picture the entire DBS device was removed. Six months after DBS device removal the patient remained symptom-free., Conclusions: DBS is a therapeutic option reserved for severe and refractory GTS cases. In our opinion DBS might be considered as a temporary application in GTS.