胰腺实性假乳头状瘤9例多排螺旋CT表现

目的: 分析胰腺实性假乳头状瘤(SPTP)的CT表现,旨在提高诊断与鉴别诊断水平.方法: 分析9例经病理证实为SPTP的CT平扫和多期增强表现及特征.结果: 9例SPTP中胰头部5例(55.6%),胰颈2例(22.2%),胰体1例(11.1%),胰尾1例(11.1%).CT表现多为边界清楚、圆形或卵圆形低密度实性或囊实性肿块影;2例可见钙化,1例位于包膜下条状钙化,1例位于肿块中心点状钙化;9例均有纤维包膜;增强扫描肿瘤实性部分延迟强化,呈持续性轻度强化的特征,大多可见特征性表现“浮云”征,囊性部分无明显强化,包膜有明显强化.9例均无淋巴结肿大或转移.结论: 胰腺实性假乳头状瘤的CT 表现具有一定的特征性,多期增强扫描有助于诊断与鉴别诊断.

Analysis of MSCT imaging of the solid pseudopapillary tumor of pancreas in 9 cases

Objective： To analyze the CT imaging of the solid pseudopapillary tumor of pancreas（ SPTP） so as to improve its diagnosis and differential diagnosis. Methods： The CT and MSCT imaging characteristics of 9 cases with SPTP diagnosed by pathology were retrospectively analyzed. Results： Among the 9 cases with SPTP,5 cases in pancreatic head（ 55. 6%）,2 cases in pancreatic neck（ 22.2%）,1 case in pancreatic body（ 11.1%） and 1 case in pancreatic tail（ 11.1%） were found. The CT imaging showed that the tumor was round or oval low density solid or solid-cystic mass with clear boundary,calcification in 2 cases,strip calcification under amicula in 1 case and punctate calcification in tumor centre in 1 case were found. The tumors in all cases were wrapped by fiber amicula. The delayed reinforcement with persistently slight enhanced features（ floating cloud symptom） in solid part of tumor was showed by enhanced CT scan,no obvious enhancement in the cystic part of tumor and obvious enhancement in fiber amicula were found. The lymph nodes enlarging or metastasis in all cases were not be found. Conclusions： The CT imaging of SPTP has certain characteristics,and multi-phase enhanced scan can improve its diagnosis and differential diagnosis.