13
Serous microcystic adenoma of the pancreas showing atypical imaging features. A well-demarcated hypervascular mass (arrows) with lobulated outer margin is seen in the tail of the pancreas. Note the dilatation of upstream pancreatic duct (arrowhead) and atrophy of pancreatic parenchyma. Two radiologists confused this lesion with a neuroendocrine tumor.
2
背景
SCN根据肉眼所见分为5种亚型: 浆液性微囊腺瘤——传统意义上的SCN; 浆液性寡囊腺瘤 VHL相关囊性肿瘤 实性浆液性腺瘤 浆液性囊腺癌
3
Typical honeycomb pattern of serous microcystic adenoma
4
Serous microcystic adenoma of the pancreas showing typical imaging features.
胰腺浆液性囊性肿瘤 CT表现
1
背景
胰腺浆液性囊性肿瘤(Serous cystic neoplasms,SCNs)大约占所有胰腺囊性肿瘤的20%。
镜下——囊样结构,周围包绕富含糖原的立方形 细胞,细胞内含透明稀薄的浆液,同时可见血管 丰富的胶原或透明样变的基质。
传统的观念认为SCN是多个微囊构成的腺瘤,影 像上典型表现——蜂窝样结构,伴中心瘢痕或钙 化。