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  • Title: Solitary Fibrous Tumor of Central Nervous System: Clinical and Prognostic Study of 24 Cases.
    Author: Jiang N, Xie YY, Chen W, Peng ZF, Yuan XR, Li XJ, Feng CY, Wang-Gou SY.
    Journal: World Neurosurg; 2017 Mar; 99():584-592. PubMed ID: 28017751.
    Abstract:
    BACKGROUND: Solitary fibrous tumors (SFTs) are rare mesenchymal tumors that occasionally occur in the central nervous system (CNS). It is difficult to fully understand their clinical characteristics, partly due to a limited number of reported cases. METHODS: We reviewed 24 patients admitted to our institution between 2009 and 2016 with CNS solitary fibrous tumors. We reviewed and analyzed patient profiles, such as demographics, presentations, imaging studies, extent of resection, and adjuvant treatment. Differences between malignant and benign SFTs were assessed using the χ2 test or Student's t-test. Kaplan-Meier analysis was used to estimate the disease-free survival (DFS) rate. The multivariate Cox regression analysis was performed to evaluate the possible predictive value of the DFS rate of the previously mentioned covariates. RESULTS: A total of 13 men and 11 women were enrolled in the study (the average age was 43). The median follow-up time was 58 months. Twenty-one patients underwent gross total resection (GTR), and 3 patients received a subtotal resection (STR). The tumors in 15 patients (62.5%) were atypical or malignant. One patient (4.2%) suffered SFT-related death (multiple organ failure by tumor metastasis), and 3 patients (12.5%) experienced tumor recurrence. We found that a large tumor size (≥10 cm, P < 0.001) and STR (P < 0.001) were negatively associated with the DFS rate. CONCLUSION: CNS SFTs are rare, slow-growing, less aggressive, and recrudescent tumors. Complete resection is the most effective therapy. Large tumor size and STRs might shorten DFS time.
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