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目的通过对腹膜后纤维化的(RPF)的多层螺旋CT(MSCT)图像分析,提高对该病的认识及准确诊断率。方法回顾性分析经临床及病理确诊的13例RPF的影像资料,均行MSCT平扫及三期增强(13例),后处理方法包括多平面重建(MPR)、最大密度投影(MIP)、曲面重建(CPR),分析内容包括病变的形态、位置、密度、范围、强化程度及对周围组织器官的侵犯等。结果 13例患者平扫均表现为腹膜后接近肌肉密度或略低密度病变,其中弥漫性软组织影10例,肿块型3例。11例不同程度包绕腹膜后血管,6例侵犯单侧或双侧输尿管,出现肾盂及输尿管积水。增强扫描10例出现轻-中度强化,3例未见明显强化。结论 MSCT平扫及增强检查结合各种后处理重建技术对RPF位置、形态及侵犯范围有清晰的显示,对本病的诊断及鉴别诊断具有重要价值,有助于增强临床医师对该病的认识。
Objective To improve the understanding of the disease and the accurate diagnosis rate by multi-slice spiral CT (MSCT) image analysis of retroperitoneal fibrosis (RPF). Methods Thirteen cases of RPF were retrospectively analyzed. All cases underwent MSCT and three stages of enhancement (13 cases). The post-treatment methods included multiplanar reconstruction (MPR), maximum density projection (MIP), curved surface Reconstruction (CPR), the analysis includes the morphology, location, density, scope, degree of enhancement and invasion of the surrounding tissues and organs. Results All the 13 patients presented with retroperitoneal close to muscle density or slightly low density lesions, including diffuse soft tissue in 10 cases and mass in 3 cases. 11 cases of varying degrees around the retroperitoneal blood vessels, 6 cases of unilateral or bilateral invasion of the ureter, renal pelvis and ureter hydronephrosis. Enhanced scan in 10 cases appeared mild to moderate enhancement, 3 cases no significant enhancement. Conclusions MSCT combined with enhanced examination combined with various post-operative reconstruction techniques clearly shows the location, shape and extent of RPF, and is of great value in the diagnosis and differential diagnosis of the disease, which helps to enhance clinicians’ understanding of the disease .