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作者对26例病理组织学测定胰癌直径小于4cm者作了影象学回顾性研究,其中7例肿瘤直径<2cm(t_1),19例直径为2.1～4.0cm(t_2)。21例为胰头癌,5例为胰尾癌。ERCP 所见胰管象可分4型,Ⅰ型;狭窄型;Ⅱ型:笔尖中断型;Ⅲ型:断裂型;Ⅳ型:其它。Ⅰ型根据主胰管狭窄部形态可分i 光滑,ii 不规则。Ⅰ-i 型5例,Ⅰ-ii 型6例,均为胰头癌。Ⅱ型4例,胰头癌2例,胰尾癌2例。Ⅲ型8例,胰头癌5例,胰尾癌3例。Ⅳ型2例。t_1病例可见胰管象者6例,其中Ⅰ-ii 型3例,Ⅲ型2例,Ⅳ型1例。22例CT 可见肿瘤影象,平扫CT16例呈等密度,6例呈低密度。增强CT 内部均匀者10例,不均匀者12例。境界光滑者5例,不规整
The authors performed a retrospective study of 26 patients with pancreatic cancer less than 4 cm in diameter by histopathologic examination. Among them, 7 patients had a tumor diameter of less than 2 cm (t_1) and 19 patients had a diameter of 2.1 to 4.0 cm (t 2). Twenty-one cases had pancreatic cancer and 5 cases had pancreatic tail cancer. ERCP pancreatic duct can be divided into 4 types, type I; stenosis; type II: nib interrupted type; type III: fracture type; type IV: other. Type I can be divided into i smooth according to the shape of the main pancreatic duct stenosis, ii irregular. I-i type 5 cases, I-ii type 6 cases, are pancreatic cancer. Type 4 had 4 cases of pancreatic head cancer and 2 cases of pancreatic tail cancer. There were 8 cases of type III, 5 cases of pancreatic head cancer and 3 cases of pancreatic tail cancer. Type IV 2 cases. Six cases of pancreatic ducts were found in t_1 cases, including 3 cases of I-ii type, 2 cases of type III, and 1 case of type IV. Tumor images were seen in 22 cases of CT, 16 cases of plain CT showed iso-density, and 6 cases showed low density. There were 10 cases with enhanced CT internal homogeneity and 12 cases with non-uniform CT. Smoothness in 5 cases, irregular