男性患者胰腺实性假乳头状肿瘤的临床和磁共振成像特点

Clinical and Magnetic Resonance Imaging Features of Solid Pseudopapillary Tumor of the Pancreas in Male Patients

目的分析男性患者胰腺实性假乳头状肿瘤(SPT)的临床和磁共振特点。方法回顾性分析病理证实的SPT 51例患者(男14例、女37例)的临床和磁共振成像资料,图像分析包括肿瘤位置、最大径、形态、边界、包膜、囊实性成分、信号、动态强化方式。结果男性SPT的平均最大径明显小于女性[(3.9±1.6)cm比(6.3±3.9)cm,P=0.035]。男性纯实性SPT(8/14)较女性(9/37)多见(P=0.037)。SPT T1加权成像男性以均匀低信号为主(11/14),女性以不均匀低信号为主(23/37)(P=0.001)。SPT出血女性(22/37)较男性(2/14)多(P=0.005)。SPT的临床和其他磁共振成像特征男性与女性比较差异无统计学意义(P>0.05)。结论男性患者SPT较小,肿瘤成分以纯实性多见,较少出血,其余临床和磁共振成像特点与女性相似。

Objective To analyze the clinical and magnetic resonance imaging（MRI） findings of solid pseudopapillary tumor（SPT） of the pancreas in male patients.Methods Clinical and MRI features of 51 patients with pathologically-proved SPT were retrospectively analyzed.The following MRI features of the lesions were analyzed：location,maximal diameter,shape,margin,capsule,solid and cystic components,signal intensity characteristics,and enhancement patterns.Results The average maximal diameter of the SPT in male patients was significantly smaller [（3.9±1.6） cm vs.（6.3±3.9） cm,P=0.035] than that of SPT in female pa-tients.Pure solid tumors were signiciantly more common in male patients（8/14） than in female patients（9/37）（P=0.037）.T1-weighted images of SPT showed mainly homogenous hypo-intensity in male patients（11/14） and heterogeneous hypo-intensity in female patients（23/37）（P=0.001）.Hemorrhage was more prevalent in female patients（22/37） than in male patients（2/14）（P=0.005）.There were no significant differences between male and female patients regarding clinical features and other magnetic resonance features（P〈0.05）.Conclusions On MRI,SPT in male patients is small and shows mainly pure solid component with rare hemorrhage.The clinical and other MRI features of SPT are not different between males and females.