CT and MR features of supratentorial intraparenchymal ependymoma(analysis of 15 cases)
WU Yue1, ZHANG Xue-lin2, YANG Ben-qiang1, GUAN Chang-qun1, LIU Wen-yuan1
1. Department of Radiology, General Hospital of Shenyang Military Command, Shenyang 110016, China;2. Center of Diagnosis of Image, Southern Hospital, Guangzhou 510515, China
Abstract：Objective: To analyse the CT and MRI features of supratentorial intraparenchymal ependymoma and to improve the diagnostic accuracy of atypical supratentorial intraparenchymal ependymoma. Materials and Methods: The CT and MR images of 15 cases with supratentorial intraparenchymal ependymoma confirmed by postoperative pathology were analyzed retrospectively. Among the 15 cases, 9 were male and 6 female. Two cases were under 10 years old, 2 cases were 11~20 years old, and 11 over 30 years old. Results: Supratentorial intraparenchymal ependymoma frequently involves the boundary sites of parietal lobe, temporal lobe and occipital lobe. At most, its growth closed to the brain surface, and in the affinity of the supratentorial ventricles, and the occurance of cystic changes were usually high. After administration of contrast medium, vasculature were found in the solid parts of the tumor. Peritumoral edema was absent or slight. The tumor was demonstrated slightly hyperdense with marked inhomogeneous enhancement after administration of contrast medium. Conclusion: The finding of vascular image in the solid parts of tumor was also the characteristic of supratentorial intraparenchymal ependymoma. Identifying the manifestation of supratentorial intraparenchymal ependymoma in CT and MRI was helpful in correct preoperative diagnosis of supratentorial intraparenchymal ependymoma.
2006, Vol. 17 
