关键词: 脊髓肿瘤, 血管母细胞瘤, 核磁共振成像

Abstract: 【Abstract】〓Objective〓To elucidate the MRI characteristics of spinal cord hemangioblastomas. Methods〓The clinical data and MRI findings in seven patients with pathologically confirmed spinal cord hemangioblastimas were reviewed retrospectively. All of the patients underwent MRI scan. Results〓The hemangioblastimas showed single lesion in six patients and showed multiple lesions in one case by MRI. A total of eight intraspinal hemangioblastimas were located in intramedullary, including single lesion at medulla oblongata, four lesions at the cervical spinal cord, two lesions at the thoracic spinal cord and one lesion at the lumbar spinal cord. Tumors showed point-like or nodular appearance,some of them sausage-like or irregular shape. The tumors were isointensity or slight hypointensity on T1WI and hyperintensity on T2WI. Small(more than 20 mm) tumors showed obviously homogeneous enhancement after contrast injection, however, large (less than 20 mm) tumors showed obviously heterogeneous enhancement. Seven of those 8 tumors were accompanied by vascular flow voids or peritumoral edema. Conclusion〓The MRI findings of hemangioblastomas in the spinal cord are characteristic. MRI is valuable for establishing the diagnosis preoperately.

Key words: Spinal cord tumors, Hemangioblastomas, Magnetic resonance imaging