Peri-operative SARS-CoV-2 infection increases postoperative mortality. The aim of this study was to determine the optimal duration of planned delay before surgery in patients who have had SARS-CoV-2 infection. This international, multicentre, prospective cohort study included patients undergoing elective or emergency surgery during October 2020. Surgical patients with pre-operative SARS-CoV-2 infection were compared with those without previous SARS-CoV-2 infection. The primary outcome measure was 30-day postoperative mortality. Logistic regression models were used to calculate adjusted 30-day mortality rates stratified by time from diagnosis of SARS-CoV-2 infection to surgery. Among 140,231 patients (116 countries), 3127 patients (2.2%) had a pre-operative SARS-CoV-2 diagnosis. Adjusted 30-day mortality in patients without SARS-CoV-2 infection was 1.5% (95%CI 1.4-1.5). In patients with a pre-operative SARS-CoV-2 diagnosis, mortality was increased in patients having surgery within 0-2 weeks, 3-4 weeks and 5-6 weeks of the diagnosis (odds ratio (95%CI) 4.1 (3.3-4.8), 3.9 (2.6-5.1) and 3.6 (2.0-5.2), respectively). Surgery performed ≥ 7 weeks after SARS-CoV-2 diagnosis was associated with a similar mortality risk to baseline (odds ratio (95%CI) 1.5 (0.9-2.1)). After a ≥ 7 week delay in undertaking surgery following SARS-CoV-2 infection, patients with ongoing symptoms had a higher mortality than patients whose symptoms had resolved or who had been asymptomatic (6.0% (95%CI 3.2-8.7) vs. 2.4% (95%CI 1.4-3.4) vs. 1.3% (95%CI 0.6-2.0), respectively). Where possible, surgery should be delayed for at least 7 weeks following SARS-CoV-2 infection. Patients with ongoing symptoms ≥ 7 weeks from diagnosis may benefit from further delay.

SARS-CoV-2 has been associated with an increased rate of venous thromboembolism in critically ill patients. Since surgical patients are already at higher risk of venous thromboembolism than general populations, this study aimed to determine if patients with peri-operative or prior SARS-CoV-2 were at further increased risk of venous thromboembolism. We conducted a planned sub-study and analysis from an international, multicentre, prospective cohort study of elective and emergency patients undergoing surgery during October 2020. Patients from all surgical specialties were included. The primary outcome measure was venous thromboembolism (pulmonary embolism or deep vein thrombosis) within 30 days of surgery. SARS-CoV-2 diagnosis was defined as peri-operative (7 days before to 30 days after surgery); recent (1-6 weeks before surgery); previous (≥7 weeks before surgery); or none. Information on prophylaxis regimens or pre-operative anti-coagulation for baseline comorbidities was not available. Postoperative venous thromboembolism rate was 0.5% (666/123,591) in patients without SARS-CoV-2; 2.2% (50/2317) in patients with peri-operative SARS-CoV-2; 1.6% (15/953) in patients with recent SARS-CoV-2; and 1.0% (11/1148) in patients with previous SARS-CoV-2. After adjustment for confounding factors, patients with peri-operative (adjusted odds ratio 1.5 (95%CI 1.1-2.0)) and recent SARS-CoV-2 (1.9 (95%CI 1.2-3.3)) remained at higher risk of venous thromboembolism, with a borderline finding in previous SARS-CoV-2 (1.7 (95%CI 0.9-3.0)). Overall, venous thromboembolism was independently associated with 30-day mortality ). In patients with SARS-CoV-2, mortality without venous thromboembolism was 7.4% (319/4342) and with venous thromboembolism was 40.8% (31/76). Patients undergoing surgery with peri-operative or recent SARS-CoV-2 appear to be at increased risk of postoperative venous thromboembolism compared with patients with no history of SARS-CoV-2 infection. Optimal venous thromboembolism prophylaxis and treatment are unknown in this cohort of patients, and these data should be interpreted accordingly.

The STTCS approach provides good access to tumors located in the trigonal region, reducing the risk of iatrogenic language or visual field deficits. In dominant hemisphere lesions, in the hands of an experienced neurosurgeon, the STTCS approach is an effective alternative to existing techniques.

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In non-trauma neurosurgical patients undergoing elective cranial procedures, a conservative prophylactic antibiotic policy is effective in achieving low rates of bacterial meningitis with low rates of MDR infections. Therefore, our results make a compelling case for a conservative prophylactic antibiotic policy.

Gliosarcomas (GS) are high grade, rare tumours. Radiologically they are seen as a surfacing lesion, often having a thick dural attachment located within the parenchyma of the brain. We report a very unusual case of an intraventricular non-parenchyhmal gliosarcoma in a 60-yearold female. Magnetic resonance imaging of the brain revealed a well defined brilliantly enhancing mass located in the septal region and extending into the body and the frontal horn of the lateral ventricle on either side. The mass was isointense on T1-weighted sequences and hypointense on T2-weighted sequences. Very few reports that describe this entity exist and our case report adds to the sparse literature.KeywoRds: Gliosarcoma, Intraventricular, Non parenchymal ÖZ Gliosarkomlar (GS) yüksek dereceli, nadir tümörlerdir. Radyolojik olarak sıklıkla beyin parankiminde bulunan kalın dural bir tutulma kısmıyla yüzeye çıkan bir lezyon olarak görülürler. Burada 60 yaşında bir kadında intraventriküler nonparenkimal gliosarkom şeklinde çok nadir bir vakayı sunuyoruz. Beynin manyetik rezonans görüntülemesi septal bölgede çok parlak şekilde kontrast madde tutan iyi tanımlanmış bir kitleyi ve her iki tarafta lateral ventrikülün frontal kornusu ve gövdesine uzanmasını gösterdi. Kitle T1 ağırlıklı dizilerde izointens ve T2-ağırlıklı dizilerde hipointensti. Bu varlığı tanımlayan çok az sayıda rapor vardır ve vaka raporumuz bu az sayıda yayına katkıda bulunmaktadır.

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Background: Conus schistosomiasis is an extremely rare entity in which patients present with a wide range of neurological symptoms such as low back pain, paresthesia, fever, myalgia, paraparesis, and paraplegia. This neglected tropical parasitic disease causes significant neurological morbidity. The migration of parasitic worms and their eggs into the central nervous system can lead to profound and life-altering disabilities. Early, accurate diagnosis, and treatment can lead to the complete resolution of symptoms. Case Description: A 5-year-old boy from South Sudan presented with complaints of sudden onset, progressive bilateral lower limb weakness for the past month, inability to walk or stand without assistance, and urinary incontinence. Magnetic resonance imaging spine showed an irregular enhancing lesion within the conus. The various possibilities, such as Astrocytoma, and granulomatous disorders were considered. However, a biopsy revealed the lesion to be Conus schistosomiasis, a rare condition with only a few cases reported in children. Typical clinicoradiological presentation and the treatment paradigm have been discussed in this manuscript. Appropriate management of this lesion can avert surgical intervention needed for either a diagnosis or treatment. Conclusion: This case report aims to emphasize the importance of considering schistosomiasis as an important differential diagnosis of a conus intramedullary lesion, especially in patients from tropical endemic countries. The neurological recovery in this infestation is directly related to early diagnosis and treatment. Therefore, it is essential to recognize this entity, as early detection and management would result in significant neurological improvement without undergoing surgery.