[Treatment and pathological mechanism of multicentric glioma].

OBJECTIVE: To explore the diagnosis and treatment of multicentric glioma and discuss its underlying pathological mechanism. METHODS: The clinical cases of multicentric glioma at our department were prospectively collected from January 2012 to December 2014. A total of 62 cases, along with the literally reported cases with relative complete data, were studied with Kaplan-Meier and COX regression to identify the prognostic factors of disease. RESULTS: The median age was 55.3 ± 14.3 (11-78) years. The ratio of male-to-female was 1. 27. There were synchronous (n = 48) and multichronous (n = 13) multicentric gliomas. The median survival time was 8 months and 7 months if calculated from the appearance of new tumor. Kaplan-Meier analysis revealed that the survival time was correlated with age, resection of tumor, radiotherapy and chemotherapy. And COX regression analysis indicated that only resection of tumor (s) and chemotherapy were independently correlated with the prognosis of multicentric glioma. Conclusion Multicentric glioma is mainly of high-grade glioma with a very poor prognosis. Total resection and standard chemotherapy yield a better prognosis. Radiotherapy should be prudent if there are signs of intracranial hypertension.

Study of the diagnostic value of magnetic resonance imaging for early arthropathy of collagen-induced arthritis model / 中华风湿病学杂志

Objective To establish the rat model of collagen-induced arthritis and study the diagnostic value of MRI for early RA by comparing to pathological changes. Methods Thirty Wistar rats were randomly divided into normal groups and experimental groups.Fifteen rats of the experimental groups were immunized with type Ⅱ collagen and Freund's Adjuvant Incomplete. At the scheduled days, the selected rats of both experimental and normal groups underwent X-ray, 1.5T MR scan plus enhancement and histological analysis. Results Arthritis Index increased on the 14th day after immunization and reached the peak on the 28th day in the experimental group, the positivity of Anti-CⅡ antibody was significantly different from the normal group.The experiemental model was established in 93.33% of all rats. The enhanced MRI showed that 12 (12/15) rats presented with abnormal signs . The sensitivity of MRI was 85.71% and the specificity was 100%. There was no significant correlation could be found between MRI and histological changes X-ray revealed soft tissue swollen in 4 (4/15) rats, which showed that MRI had higher sensitivity in detecting abnormal signs of arthritis than X-ray. Conclusion MRI may be used in the early diagnosis of early RA.