Transorbital neuroendoscopic surgery for treatment of sphenoid wing meningiomas extending to the cavernous sinus: clinical implications and a technical illustration.

OBJECTIVE: The aim of this study was to evaluate the efficacy and safety of transorbital neuroendoscopic surgery (TONES) in the management of sphenoid wing meningiomas (SWMs) with cavernous sinus and orbital invasion. METHODS: The authors conducted a retrospective review of 32 patients with SWMs treated at Gazi University using TONES from October 2019 to May 2023. The study includes clinical applications to elucidate the endoscopic transorbital approach. Surgical techniques focused on safe subtotal resection, aiming to minimize residual tumor volume for subsequent radiosurgery. Data were collected on patient demographics, tumor characteristics, surgical procedures, complications, and postoperative outcomes, including radiological imaging and ophthalmological evaluations. RESULTS: Surgical dissections delineated a three-phase endoscopic transorbital approach: extraorbital, intraorbital, and intracranial. In the clinical application, gross-total resection was not achieved in any patient because of planned postoperative Gamma Knife radiosurgery. The mean follow-up period was 16.3 months. Of 30 patients with preoperative proptosis, 25 experienced postoperative improvement. No new-onset extraocular muscle paresis or visual loss occurred postoperatively. The average hospital stay was 1.15 days, with minimal complications and no significant morbidity or mortality. CONCLUSIONS: Total resection of SWMs invading the cavernous sinus and orbit is associated with substantial risks, particularly cranial nerve deficits. TONES offers a minimally invasive alternative, reducing morbidity compared with transcranial approaches, and represents a significant advancement in the surgical management of SWMs, especially those extending into the cavernous sinus and orbit. The approach provides a safe, effective, and patient-centric approach, prioritizing subtotal resection to minimize neurological deficits while preparing patients for adjunctive radiosurgery. This study positions TONES as a transformative surgical technique, aligning therapeutic efficacy with neurovascular preservation and postoperative recovery.

Radial nerve injuries and outcomes: Our surgical experience.

BACKGROUND: The aim of this study was to retrospectively evaluate patients who underwent surgery in our department for radial nerve lesions in terms of surgical outcomes. METHODS: Thirty-eight patients were admitted to our department with radial nerve lesion. Twenty-seven of the patients had entrapment neuropathy and 11 had radial nerve injury secondary to other traumas. Various factors such as surgical results, time to surgical intervention, injury mechanism, and reconstruction technique were analyzed. RESULTS: In all of 27 patients who were operated for radial nerve entrapment neuropathy, a complete improvement in wrist dorsal flexion was detected at postoperative 3rd month. Seven of the 11 patients who were operated for radial nerve lesion had different degrees of improvement in wrist dorsal flexion at the postoperative 3rd month. Two of the seven patients underwent anastomosis using a sural nerve graft. The recovery rate in our series was 89%. Three of the 4 patients who did not recover after the radial nerve injury were the patients who were operated within the 1st month after the trauma. CONCLUSION: Better functional results were obtained in the postoperative period in patients who were operated after the 1st month, underwent internal neurolysis and used a short nerve graft for anastomosis in the radial nerve lesions. In patients with entrapment neuropathy, the earliest surgery revealed satisfactory results in the postoperative period.

Extended endonasal endoscopic approach for anterior midline skull base lesions.

AIM: In recent years, extended endoscopic endonasal approach (EEEA) has been used as an alternative to transcranial approaches in the treatment of anterior midline skull base lesions. We retrospectively reviewed our cases operated using this technique and compared the results with current literature. METHOD: The data of 24 patients who were operated using EEEA in our department between 2010-2018 were retrospectively analyzed. The lesions were located in the midline between the posterior wall of the frontal sinus and tuberculum sella. Tumor locations, histopathological diagnoses, surgical techniques, outcomes and complications were documented. RESULTS: Eleven patients were female and 13 were male. Their ages ranged between 18-75 years (mean 40.5 years). Considering their locations; 12 were in the anterior fossa (50 %), 7 were in the tuberculum sella (29.1 %), and 5 were in both anatomic sites (20.8 %). Histopathologically, our series consisted of 15 meningiomas, 6 osteomas, 2 dermoid tumors and 1 metastatic carcinoma. We achieved gross total resection in 75 % of our patients. Ten patients presented with visual complaints and 7 of them improved postoperatively. Postoperative cerebrospinal fluid leakage (CSF) was observed in 3 patients and one of them developed meningitis and subsequently died of sepsis. CONCLUSION: Although the number of cases is low, EEEA seems like a safe, effective and well-tolerated treatment modality for anterior midline skull base lesions. But strict preventive measures should be taken for a possible CSF leak.

Intracavitary amphotericin B in the treatment of intracranial aspergillosis.

Intracranial aspergillosis is a rare infectious disease of the central nervous system with high mortality rates. Our aim is to present 3 cases of intracranial aspergillosis who were surgically treated with intracavitary amphotericin B administration. First case was a 21-year-old male patient. Allogeneic stem cell transplantation treatment was performed because of aplastic anemia and vocal cord paralysis developed 10 days after treatment. Multiple aspergillosis abscesses were observed in the cranial magnetic resonance imaging (MRI). Cerebral lesions were excised and 0.3 cc of amphotericin B was applied locally. Second case was a 18-year-old male patient treated for acute lymphocytic leukemia. MRI was performed on the development of consciousness change during treatment and right frontal abscess was detected. The abscess was excised and amphotericin B was applied locally. Third case was a 45-year-old woman with mastectomy. She had chemotherapy after surgery and had blood stem cell transplantation because of pancytopenia. Two months after treatments, MRI was performed on the development of ataxia and a cerebellar abscess was detected. The abscess was surgically excised and local amphotericin B was applied. The first case deceased 2 weeks after surgery and the second case died 2.5 years later due to multi-organ failure. The third case is stil alive and neurologically stable after 14 years of surgical treatment. In intracranial aspergillosis, intracavitary amphotericin B therapy may be used as an adjunct after the surgical excision of abscess. This procedure may contributes to the regression of abscess or prevention of the recurrence. But comparative clinical studies are needed for more accurate conclusions.

Effect of hyperbaric oxygen therapy on the duration of treatment of spinal tuberculosis.

The aim of this retrospective study was to investigate the effect of adjuvant hyperbaric oxygen (HBO) therapy on the duration of antibiotic treatment and rate of radiological improvement in the management of spinal tuberculosis. We reviewed a total of 51 patients with tuberculous spondylitis of the spine who were treated by percutaneous abscess drainage or radical surgical debridement with chemotherapy, and of whom 16 randomly selected patients also received adjuvant HBO therapy and 35 did not. Serological markers were monitored in the course of treatment. Percutaneous needle biopsy was performed on each patient before treatment. Spine and chest radiographs, CT scans and MRI were performed. Infection control was achieved in all patients and no recurrence occured. To our knowledge this is the first reported series of patients with spinal tuberculosis treated with HBO therapy as an adjunct to antituberculous chemotherapy. This combination provided earlier clinical and radiologic improvement than chemotherapy alone.

Multilevel cervical fusion without plates, screws or autogenous iliac crest bone graft.

OBJECTIVE: This prospective study was performed to evaluate the safety and efficacy of polyetheretherketone (PEEK) cages packed with demineralized bone matrix (DBM) mixed with autologous blood and curettage microchip material for treatment of multilevel cervical disc disease and spondylosis without the use of plates, screws or autogenous iliac crest bone graft. MATERIAL AND METHODS: Sixteen patients underwent multilevel anterior cervical discectomy and fusion (ACDF) for a total of 42 levels. Minimum follow-up was 18 months. Neurological outcomes were evaluated using the Japanese Orthopaedic Association (JOA) scoring system; cervical lordosis and cervical fusion status was assessed on X-ray. Statistical analysis was performed to compare preoperative and postoperative scores using a dependent t-test (P<0.05). RESULTS: Eight patients underwent two-level, six underwent three-level and two underwent four-level operations. The fusion rate was 90.5% and non-fusion rate was 9.5%, but reoperation was not required for these patients in the follow-up period. Cervical lordosis was preserved and neurological status was improved. No cage migration or cage failure occured. CONCLUSION: ACDF using PEEK cages packed with DBM is a safe and efficient method for treatment of multilevel cervical disc disease and spondylosis. It preserves cervical lordosis and obviates the complications related to iliac crest graft harvest and screw-plate fixation.

Is there any relationship between proinflammatory mediator levels in disc material and myelopathy with cervical disc herniation and spondylosis? A non-randomized, prospective clinical study.

The proinflammatory mediator (PIM) levels were assessed in surgically removed samples of herniated cervical intervertebral discs. The objective of this study was to investigate if there is a correlation between the levels of PIMs in disc material and myelopathy associated with cervical intervertebral disc herniation and spondylosis. The role of proinflammatory mediators in the degeneration of intervertebral disc and the inflammatory effects of disc herniations on radicular pain has been previously published. However, the possible relationship between PIMs and myelopathy related to cervical disc herniation and spondylosis has not been investigated before. Thirty-two patients undergoing surgery for cervical disc herniation and spondylosis were investigated. Surgically obtained disc materials, stored at 70 degrees C, were classified into two groups: cervical disc herniation alone or with myelopathy. Biochemical preparation and solid phase enzyme amplified sensitivity immunoassay (ELISIA) analysis of the samples were performed to assess the concentration of mediators in the samples. Very similar values of interleukin-6 were found in both groups whereas the concentrations of mediators were significantly higher in myelopathy group. This study has demonstrated that PIMs are involved in cervical intervertebral disc degeneration with higher concentrations in the samples associated with myelopathy.