Department of Radiology, Emory University School of Medicine, 1365 Clifton Rd NE, Building A, AT622, Atlanta, GA 30322, USA.
Radiographics. 2009 Oct;29(6):1749-65. doi: 10.1148/rg.296095506.
Pancreatic cystic lesions are relatively common imaging findings and may be secondary to both benign and malignant disease processes. Accurate characterization of the internal features of a cyst--including fluid, hemorrhage, septa, and enhancing soft-tissue components--is important to guide the differential diagnosis, and cross-sectional magnetic resonance (MR) imaging is the optimal modality for depicting these features. Cystic lesions of the pancreas may be divided into two categories: (a) primary cystic lesions, which include pseudocysts, serous cystadenomas, various mucin-containing cysts (mucinous nonneoplastic cysts, mucinous cystadenomas, mucinous cystadenocarcinomas, intraductal papillary mucinous neoplasms), and lymphoepithelial cysts, and (b) various solid neoplasms undergoing cystic changes (ductal adenocarcinoma with cystic features, pseudopapillary tumors of the pancreas, and cystic neuroendocrine tumors). Primary cystic lesions are more common than solid neoplasms with cystic changes. Knowledge of the varied MR imaging appearances of pancreatic cystic lesions may help radiologists achieve greater specificity in diagnostic reporting.
胰腺囊性病变是一种相对常见的影像学表现，可能继发于良性和恶性疾病过程。准确描述囊肿的内部特征（包括液体、出血、隔膜和强化的软组织成分）对于指导鉴别诊断很重要，磁共振（MR）成像的各种横断面是描述这些特征的最佳方式。胰腺囊性病变可分为两类：（a）原发性囊性病变，包括假性囊肿、浆液性囊腺瘤、各种含黏液的囊肿（黏液性非肿瘤性囊肿、黏液性囊腺瘤、黏液性囊腺癌、导管内乳头状黏液性肿瘤）和淋巴上皮囊肿；（b）各种发生囊性变的实性肿瘤（伴囊性特征的导管腺癌、胰腺假乳头状肿瘤和囊性神经内分泌肿瘤）。原发性囊性病变比伴有囊性变的实性肿瘤更为常见。了解胰腺囊性病变的各种 MR 成像表现有助于放射科医生在诊断报告中实现更高的特异性。
