胰腺实性-假乳头状瘤的不同类型影像学表现与病理对照分析

Solid-pseudopapillary tumor of pancreas： different types of imaging features and their correlationwith pathological findings

目的探讨胰腺实性-假乳头状瘤（sPrrP）影像学表现与病理表现的关系。方法分析第二军医大学附属长海医院2005-2010年19例经过手术证实为sPTP患者的影像资料，男4例、女15例，中位年龄25岁，本组均行cT平扫加增强检查和MR平扫加增强检查。将其分为实性为主型、囊实型和囊性为主型，并与其病理标本加以对照。结果（1）本组19例中，影像表现实性为主型2例（11％），囊实型13例（68％），囊性为主型4例（21％）。实性为主型囊性区域位于肿瘤周边；囊实型实性区域与囊性区域交替分布；囊性为主型为具有壁结节的厚壁囊性肿瘤。（2）CT可见12例（63％）有出血征象，4例（占21％）有钙化；所有病例（100％）在MR检查均可见到出血信号。（3）病理证实SPTP具有实性和囊性两种成分，而且不同类型病例中两者所占比例也各不相同。所有病例均有不同程度出血。结论SPTP作为好发于青年女性胰腺的肿瘤，不同类型的影像学表现与其病理形态密切相关。

Objective To explore the correlation between imaging features of solid-pseudopapillary tumor of pancreas （SPTP） and their pathological findings. Methods Analyze the imaging of 19patients （female 15, male 4, median age 25 years） who underwent surgery for SPTP , and divide their into solid- predominance type, solid-cyst type and cyst-predominance type to compare with their pathological specimens. All patients plain and enhanced CT examination and plain and enhanced MR examination. Results （1） 2 cases of solid-predominance type （11%） , 13 cases solid-cyst type （68%） , 4 cases of cyst- predominance type（21% ）. Cyst are located in the surrounding area of solid-predominance type; Solid and cyst are mixed in cyst-solid type; cyst-predominance type are thick-walled cystic tumors with nodules. （2） 12 cases （63%）show obvious signs of haemorrhage and 4 cases （21%） had calcification on CT; All cases （100%） which on MR can be seen signs of haemorrhage. （3）Pathological findings demonstrate SPTP have two ingredients： solid and cystic. However, the two ingredients occupy different ratio in different types. Haemorrhage are seen in all of tumors. Conclusion As a sort of neoplasm which preferentially arising in SPTP occur in pancreas of young women, its different types of imaging features related to their pathological findings.