pancreatic mass      
noun [ C ]  medical specialized uk/ˌpæŋ.kri.æt.ɪk ˈmæs/ us/ˈpæŋ.kriˌæt̬.ɪk ˈmæs/
 胰头肿块
a growth or tumour in the pancreas that can be either benign (= not likely to cause death) or malignant (= if untreated could lead to death)