颅骨孤立性浆细胞瘤的影像学表现

Imaging features of solitary plasmacytoma of skull

目的：探讨颅骨孤立性浆细胞瘤的CT及MRI影像学表现，提高对该病的影像诊断水平。方法：回顾性分析21例经手术病理证实的颅骨孤立性浆细胞瘤的CT及MRI影像资料。其中男12例，女9例，年龄26～68岁。17例行MR扫描，13例行CT扫描。结果：21例颅骨孤立性浆细胞瘤中，17例位于颅底骨，4例位于颅盖骨。CT扫描肿瘤均呈稍高密度影，相应颅骨可见不规则骨质破坏。MR扫描肿瘤多为均匀T1及T2等信号，增强扫面呈明显均匀强化。结论：颅骨孤立性浆细胞瘤具有典型影像表现，掌握其影像学特征可以提高影像诊断符合率。

Objective：To investigate the CT and MRI features of solitary plasmaeytoma of skull, in order to improve the accuracy of diagnosis. Methods： Imaging materials of 21 patients with surgery and pathology proved solitary plasmacytoma of skull were retrospectively reviewed. There were males （12 cases） and females （9 cases）, the age ranged from 26 to 68y. Seventeen patients had MR imaging and thirteen patients underwent CT scanning. Results： Among the 21 cases with solitary plasmacytoma of skull,lesion located at skull base （17 cases） and cranium （4 cases）. The tumors showed slightly hyper-attenuated on CT scan with bone destruction and mostly showed homogeneous iso-signal-intensity on T1WI as well as on T2 WI, with marked homogeneous enhancement. Conclusion：Characteristic imaging findings could be observed in solitary plasmacytoma of skull. With well knowledge of these imaging characteristics,the diagnostic accuracy of solitary plasmacyto- ma of skull could be improved.