论文部分内容阅读
目的探讨颅骨胆脂瘤的CT表现,以提高其诊断正确率。方法回顾性分析15例经手术病理证实的颅骨胆脂瘤的CT表现。结果病变均为单发,14例起源于板障,1例发生于颅缝间。CT平扫均表现为颅骨局限性膨胀性骨质破坏,边缘可见硬化边,7例突破颅骨内外板,边缘呈火山口样改变。11例密度不均匀,其中6例病灶内存在斑点状钙化,1例以脂肪密度为主,2例以水样密度为主,2例以等密度为主;4例病变密度均匀。2例行增强扫描,均表现为轻度强化。多平面重组(MPR)、VR图像可立体直观显示骨质破坏的形态及程度。结论颅骨胆脂瘤的CT表现具有特征性,结合后处理技术可提高诊断正确率。
Objective To explore the CT manifestations of skull cholesteatoma in order to improve its diagnostic accuracy. Methods The CT findings of 15 cases of skull cholesteatoma confirmed by surgery and pathology were retrospectively analyzed. Results lesions were single, 14 cases originated in the plate, 1 case occurred in the cranial suture. CT scan showed the limitations of the expansion of the skull bone destruction, the edge of the visible hardening edge, 7 cases of internal and external skull break, the edge of a crater-like changes. Eleven cases were heterogeneous in density, of which 6 cases had speckled calcification, 1 case had fat density, 2 cases were water-based and 2 cases were isodense; 4 cases had uniform density. 2 routine enhanced scan, all showed mild enhancement. Multi-plane reorganization (MPR), VR images can be stereoscopic visual display of bone destruction morphology and extent. Conclusion CT manifestations of skull cholesteatoma is characteristic. Combined with post-processing techniques can improve the diagnostic accuracy.