Objective To enhance the preoperative diagnosis rate through analyzing the computed tomography ( CT) rnfeatures of solid-pseudo papillary tumor( SPT). Methods The CT images of 12 patients with patholopcally proven SPT were rnretrospective analyzed. The CT signs features were summarized and analyzed. Results Seven patients had tumors in the head rnof the pancreas .two in the body, and three in the tail. The tumors were cystic solid structures. The density of solid portions was rnlower or equal,enhancement scanning in the arterial phase had slight or midrange enhancement and forlification degree in the rnportal venous phase rose but was lower than that in normal glandular substance. Cystic portions appeared low density on both rnplain scanning and enhancement scanning. Five cases were mainly composed of cystic structure8, two cases were mainly comrnposed of solid structures, and five cases were similar proportions of cystic and solid parts. Six cases had calcification within the rntumors ,two of them had stippled calcification in the central part,and the other four had setuliform calcification nearby the edge rnof tumors. Conclusion CT signs of SPT have some special features .which is significantly important for preoperative diagnornSIS.%目的 分析胰腺实性-假乳头状瘤(SPT)的CT表现,以提高术前诊断率.方法 回顾性分析12例经病理证实的胰腺SPT的CT图像资料,总结并分析胰腺SPT的CT征象特点.结果 肿瘤发生于胰头7例,体部2例,尾部3例,呈圆形或类圆形.肿瘤呈囊实性,实性部分呈稍低或等密度,增强扫描动脉期呈轻至中度强化,门脉期强化程度增加,强化程度低于正常胰腺实质,囊性部分平扫及增强扫描均呈低密度.5 例以囊性为主,2 例以实性为主,5 例为囊实相仿型.6 例肿瘤可见钙化,2例呈中心斑点状钙化,4例为边缘条状钙化.结论 胰腺SPT的CT征象较有特征性,CT扫描对胰腺SPT的术前诊断具有重要意义.
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