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目的探讨胰腺实性假乳头状瘤(SPT)CT、核磁共振成像(MRI)征象与病理特点的联系,以提高对该病的认识和术前诊断率。方法回顾性分析2004年4月至2011年4月广东省人民医院21例经手术和病理证实的SPT术前CT和MRI表现,并与病理结果进行对照分析。结果病灶位于胰头8例,胰体3例,胰尾10例。病灶最大直径3.5～18.0cm,平均6.3cm。9例以实性为主,8例为囊实性相间,4例以囊性为主;4例可见环形钙化,1例可见出血征象。2例恶性SPT中,1例出现肝转移,1例侵犯十二指肠壁。三期增强扫描所有病灶实性部分动脉期呈周边轻中度强化,门脉期和延迟期呈渐进性强化。结论 SPT的CT、MRI表现能反映其病理特点,了解它们之间的关系有助于提高本病术前诊断率。
Objective To explore the relationship between solid pseudopapillary tumor (SPT) CT and magnetic resonance imaging (MRI) and pathological features of pancreas to improve the understanding of the disease and the preoperative diagnosis rate. Methods The CT and MRI findings of 21 patients with SPT confirmed by surgery and pathology from April 2004 to April 2011 in Guangdong Provincial People’s Hospital were retrospectively analyzed and compared with the pathological results. Results The lesions were located in the head of pancreas in 8 cases, pancreatic body in 3 cases and pancreatic tail in 10 cases. The maximum diameter of lesions 3.5 ~ 18.0cm, an average of 6.3cm. Of the 9 cases, the main features were solid, 8 cases were cystic and solid, 4 cases cystic; 4 cases showed ring calcification, and 1 case showed bleeding signs. In 2 cases of malignant SPT, liver metastases occurred in 1 case and invasion of duodenal wall in 1 case. Three enhanced scan of all lesions solid part of the peripheral arterial phase was mild to moderate enhancement, portal phase and delayed phase was progressive enhancement. Conclusion The CT and MRI findings of SPT can reflect the pathological features of SPT. Understanding the relationship between SPT and CT can help improve the preoperative diagnosis rate.