51歲男性,主訴腹部不適,沒有特定的誘發因子
C+ CT shows an hypoenhanced lesion in the pancreatic tail, with adjacent soft tissue invasion.
Ans: pancreatic adenocarcinoma; ddx: lymphoma, metastasis
***Pancreatic tumor 鑑別診斷,包含adenocarcinoma, lymphoma, neuroendocrine tumor, solid pseudopapillary tumor, metastasis
這裡有幾個注意點:
- adenocarcinoma通常會出現周邊血管/結構encasement 情形
- 最常見的胰臟hypervascular tumor是neuroendocrine tumor
- Solid pseudopapillary tumor少見,典型影像學特徵為mixed solid and cystic well-defined mass,出現在年輕女性
- hypervascular metastasis來源:melanoma, breast cancerm RCC