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目的:探讨直肠管状绒毛状腺瘤的MRI表现,提高认识。方法:回顾性分析14例经过病理证实的直肠管状绒毛状腺瘤的MRI表现。结果:14例直肠管状绒毛状腺瘤均为单发,其中8例为宽基底,4例为窄基底,2例为肠壁环形增厚。9例与肠壁间有通气间隙。平扫T1WI表现为12例呈稍低信号,2例呈等信号;T2WI表现为10例呈稍高信号,2例呈高信号,2例呈等信号。增强扫描14例均呈不均匀强化,其中8例呈“三环状”强化。DWI序列9例呈稍高信号,5呈高信号。结论:MRI在直肠管状绒毛状腺瘤的诊断中具有较高的价值,对术前手术方式的选择具有重要意义。
Objective: To investigate the MRI findings of rectum tubular villous adenoma and to raise awareness. Methods: MRI findings of 14 cases of pathologically confirmed tubular tumor of villous adenoma were analyzed retrospectively. Results: All the 14 cases of rectal tubular villous adenoma were single, of which 8 cases were wide basement, 4 cases were narrow basement and 2 cases were annular thickening. There were ventilation gaps between 9 cases and intestinal wall. In T1WI, 12 cases showed slightly lower signal and 2 cases showed equal signal. In T2WI, 10 cases showed slightly higher signal, 2 cases showed high signal and 2 cases showed equal signal. Enhanced scanning in 14 cases showed uneven enhancement, of which 8 cases were “tricyclic ” enhanced. DWI sequence in 9 cases was slightly higher signal, 5 was high signal. Conclusion: MRI is of high value in the diagnosis of rectal tubular villous adenoma and is of great significance for the selection of preoperative surgical approach.