Choi B Y, Chang K H, Choe G, Han M H, Park S W, Yu I K, Park Y H, Kim H J
Department of Radiology, Seoul National University College of Medicine, National Police Hospital, Korea.
AJNR Am J Neuroradiol. 2001 Apr;22(4):799-802.
Spinal intradural extramedullary capillary hemangiomas are extremely rare. We present the MR imaging and histologic findings in three patients with this abnormality. The three patients were men who had symptoms of either myelopathy (n = 2) or radiculopathy (n = 1). The tumors were well demarcated, 1.5-2.0 cm in diameter, and were located at the posterior or posterolateral portion of the thecal sac (one at the L1 level and the other two at the midthoracic level). On MR images, the tumor showed isointensity relative to the spinal cord on T1-weighted images, hyperintensity on T2-weighted images, and strong homogeneous enhancement on contrast-enhanced T1-weighted images in all three patients. In two patients, the dural tail sign was observed. Capillary hemangioma should be included in the differential diagnosis of a spinal intradural extramedullary tumor.
脊髓硬膜内髓外毛细血管瘤极为罕见。我们展示了3例患有这种异常疾病患者的磁共振成像（MR）和组织学检查结果。这3例患者均为男性，分别有脊髓病症状（2例）或神经根病症状（1例）。肿瘤边界清晰，直径为1.5 - 2.0厘米，位于硬膜囊的后部或后外侧部分（1例位于L1水平，另外2例位于胸段中部水平）。在磁共振图像上，所有3例患者的肿瘤在T1加权图像上相对于脊髓呈等信号，在T2加权图像上呈高信号，在对比增强T1加权图像上呈强烈均匀强化。2例患者观察到硬膜尾征。脊髓硬膜内髓外肿瘤的鉴别诊断应包括毛细血管瘤。
