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目的分析腹膜后神经鞘瘤的CT表现及其血液动力学特征,以提高其诊断准确率。方法经手术病理证实的腹膜后神经鞘瘤12例,术前经多排螺旋CT平扫、动脉期及静脉期增强扫描,对比剂注射流速3.5 ml/s,复习CT扫描结果并和手术病理作回顾性对照分析。结果 12例神经鞘瘤边缘光滑,肿瘤直径4.9~13.4 cm,囊实性7例,完全实质性3例,完全囊性2例。所有肿瘤呈进行性延迟强化,6例强化显著,4例中等程度强化,2例轻度强化。结论腹膜后神经鞘瘤体积大,血液动力学多样,容易误诊。
Objective To analyze CT manifestations and hemodynamic characteristics of retroperitoneal schwannoma in order to improve the diagnostic accuracy. Methods Twelve cases of retroperitoneal schwannoma confirmed by surgery and pathology were scanned with multi-slice spiral CT, enhanced arterial phase and venous phase, and the contrast medium injection flow rate was 3.5 ml / s. The CT findings were reviewed and compared with the surgical pathology Retrospective comparative analysis. Results Twelve cases of schwannoma had a smooth margin with a diameter of 4.9 ~ 13.4 cm, cystic solidity in 7 cases, complete substantive in 3 cases and complete cystic in 2 cases. All tumors showed progressive delayed enhancement, 6 cases were significantly enhanced, 4 cases were moderately enhanced and 2 cases were mildly enhanced. Conclusion Retroperitoneal schwannoma volume large, diverse hemodynamics, easily misdiagnosed.