动脉瘤样骨囊肿的影像学诊断
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| 时间：2009-02-23 18:00:34 来源： 作者： |
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Imaging diagnosis of aneurysmal bone cyst
ZHANG Guo-qing，LU Chao. Department of Radiology, Luoyang Orthopedic Hospital,Luoyang 471002, China
[Abstract] Objective To assess the the value of imaging in diagnosing aneurysmal bone cyst(ABC). Methods The imaging features of 16 cases of ABC proved pathologically were analyzed retrospectively. Imaging materials includes X-ray plain radio-graphy(n=16), CT scan(n=9) and MRI(n=6). Results Among the 16 cases, the lesion was located in long tubular bone in 9, spine in 4, shortbone and flatbonein 3. The lesions sppeared asepanding bony destruction in 13 cases, asteosclerosis in 10, accompanied bypothological fracture in 5, intemal septations in 8, fluid levels in 11, soft tissue masses in 3 and the lesions were heterogeneous signal or density of the lesoions in 12. Conclusion The imaging features of ABC has some characteristics.CT and MRI are superior to plain film.A conprehensive imaging modality can improve diagnostic accuracy of ABC.
[Key Words] bone; aneurysmal bone cyst; X-ray computed; magnetic resonance imaging
动脉瘤样骨囊肿（ABC）是一种充血性膨胀性的溶骨性病变，病因尚未明确[1]。笔者回顾性分析了16例经手术病理证实的ABC影像学资料，对比X线平片、CT、MR在影像检查中的表现，分析其影像学特征，旨在提高对本病的诊断准确率。
材料与方法
1.临床资料 本组16例中，男9例，女7例，年龄8～47岁，平均21.4岁。临床上均有不同程度的局部不适、疼痛、肿胀，运动或劳累后及病理性骨折时加重，病变邻近关节可有关节功能障碍，位于脊柱时可出现相应的神经症状。实验室检查未见异常。
2.检查方法 全部病例均行X线平片检查，9例行CT扫描，6例行MRI检查。使用Picker PQ 2000型CT机，螺距1.5，层厚4mm，间隔3mm。使用Marconi 1.5T超导型扫描仪，层厚5mm，间隔1mm，采用FSE T1WI（TR/TE 500/15mm）、T2WI（TR/TE 2000/80mm），分别行横断面、矢状面及冠状面扫描，其中3例进行了增强扫描。全部病例均经手术病理证实。
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