目的：通过分析椎管内外节细胞神经瘤（SGN）的CT与MRI影像学表现，提高对该疾病的认识。方法：回顾分析17例经手术病理证实的SGN影像学特点（CT 17例、MRI 15例），并与病理结果对照。结果：17例SGN中，15例（15/17，88.23％）为单发，其中颈椎管6例，胸椎管2例，腰椎管1例，骶管6例；4例（4/15，26.67％）位于髓外硬膜下，11例（11/15，73.3％）位于椎间孔区；2例（2/17，11.76％）多发病灶，合并神经纤维瘤病。2例肿瘤呈类圆形，4例梭形，11 例不规则形，其中9例（9/17，52.94％）跨越椎间孔沿着周围组织间隙嵌入生长。CT为略低-低密度占位，3例病变见散在分布小点状钙化。MR T1WI呈低信号7例，等-低混杂信号8例，15例T2WI上均呈现混杂高信号。增强见渐进性轻-中度强化，部分SGN见云絮状条索样强化，部分病例可始终无明显强化。结论：SGN的CT和MR表现有一定特征，正确、全面认识其影像表现，可对大多数病例做出正确诊断。
Abstract
Objective: To improve understanding of spinal canal ganglioneuroma by analyzing CT and MRI imaging features. Materials and Methods: We retrospectively analysed CT(17 cases) and MRI (15 cases) imaging features of SGNs in 17 patients that confirmed by surgery and pathology, and then compared with pathological results. Results: Of the 17 SGNs, 15 cases were solitary, including 6 cases of cervical spinal canal, 2 cases of thoracic spinal canal, 1 case of lumbar spinal canal and 6 cases of sacral spinal canal. 4 cases were located in extramedullary subdural, and 11 cases were located in intervertebral foramen. 2 cases were multiple lesions, combined with neurofibromatosis. 2 cases of tumors were round, 4 cases were fusiform, 11 cases were irregular, of which 9 cases across the intervertebral foramen, embedding growth along surrounding tissue. CT scan was slightly low or low density, and 3 cases were scattered in distribution of small dot calcification. MR T1WI showed low signal intensity in 7 cases, iso-low mixed signal in 8 cases and inhomogeneous high signal intensity on 15 cases of T2WI. The contrast enhancement was gradual, slight to moderate strengthening, parts of SGNs had cloud-flocculent, cord-like enhancement, but some cases were consistently no significant enhancement. Conclusion: CT and MR performance of SGN has certain characteristics. Correct and comprehensive understanding of its image performance can increase diagnostic accuracy.
关键词
神经节瘤 /
体层摄影术 /
螺旋计算机 /
磁共振成像
Key words
Ganglioneuroma /
Tomography, spiral computed /
Magnetic resonance imaging
中图分类号：
Ｒ739.42
Ｒ730.264
Ｒ814.42
Ｒ445.2
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