Vestibular schwannoma: predictive factors of long-term postoperative neurological outcome.

Introduction: Vestibular schwannoma (VS) is a slow-growing, benign tumor that is usually diagnosed when symptoms develop. Surgical management aims to reduce long-term sequelae (LTS) associated with late diagnosis.Objective: Identify predictive factors of LTS after VS surgery and clinical outcome measured by modified Rankin scale (mRS).Methods: This cohort study included patients submitted to VS surgery from 1999 to 2014, with a mean follow-up of 6.4 ± 4.5 years. Disability was assessed across the mRS the primary outcome was defined by scores 3 to 6, which implied poor outcome in neurological recovery. Predictive factors were identified through multivariate logistic regression.Results: A total of 101 patients were included in this study. Fifty-one (50.49%) presented mRS ≥ 3 on the late postoperative period. Men comprise 22.8%, and the mean age was 47.1 ± 16.0 years (range19-80). Patients with mRS ≥ 3 presented larger tumors (3.7 ± 1.1 cm vs. 3.2 ± 1.0 cm, p < .001), less total resection (50% vs. 76.7%, p < .010) and more neurofibromatosis II(NFII) (84.9% vs. 64.3%, p = .023). On multivariate analysis NFII, tumor size and type resection were predictive of degree of autonomy (mRS ≥3: NF II (OR 3.5, 95% CI 1.08-11.36, p = .036) and tumor size (each 1 cm, OR1.51, 95% CI 0.96-2.38, p = .050).Conclusion: Tumor size, presence of NFT II, type of surgical approach and number of surgeries were identified as predictive factors of functional sequelae in long-term follow-up after VS surgery.HighlightsOne-third of our patients presented some degree of disability that impact in autonomy (mRS ≥ 3) in the late postoperative period.Tumor size, NFII, surgical approach were predictive to comprise independency.Considering the cranial nerve monitoring and late diagnosis, our results can give some contribution to understanding the Brazilian profile of VS surgery.Our findings suggests the need to look over what it is well recognized and identify aspects that affect the prognosis such as functional disabilities in VS surgery.

Gliomas: casuística cirúrgica em um hospital-escola quaternário / Gliomas: a quaternary medical school hospital surgical casuistic

Objetivo: É apresentada neste trabalho a casuística cirúrgica de ressecção de gliomas em um hospitalescola quaternário da cidade de São Paulo, no período de 19 meses. Método: Foram coletados dados, prospectivamente, de todos os pacientes adultos com diagnóstico de glioma, submetidos à ressecção cirúrgica no hospital referido, no período de novembro de 2007 a junho de 2009, por meio de preenchimento de um protocolo pelo médico-assistente de cada caso. Resultados: No período estudado, foram realizadas 288 cirurgias para ressecção de tumores encefálicos. Dessas, 88 cirurgias foram destinadas à ressecção de gliomas do sistema nervoso central. Corresponde a 30,56% das cirurgias para ressecção de tumores encefálicos, sendo esse o maior grupo, com média anual de 55,5 gliomas operados. Conclusão: O predomínio dos astrocitomas de alto grau nos casos operados é semelhante aos dados da literatura, demonstrando a importância dessa doença. A gravidade e a considerável incidência desses tumores em nossa população mostram a necessidade de constante investimento e aprimoramento tecnológico e humano para o adequado tratamento desses pacientes.

Objective: We present in this work the gliomas surgery casuistic of a quaternary medical school hospital of São Paulo city during a 19 months period. Method: Data were collected, prospectively, of all patients with glioma operated at Hospital das Clínicas of São Paulo Medical School, in the period between November 2007 to June 2009. Results: In the studied period 288 surgeries were held for encephalic tumors resection. Of these, 88 surgeries were aimed at resection of central nervous system gliomas. That represents 30.56% of encephalic tumors surgery, the largest group with an annual average of 55.5 gliomas operated. Conclusion: The prevalence of high grade astrocytomas operated is similar to literature data, demonstrating the importance of this disease on the health of a community. The seriousness and considerable incidence of these tumors in our population show the necessity of constant investment in technological and human enhancement for the proper treatment of these patients.