RESUMO
Purpose To investigate the features of 64-slice spiral computerized tomography (CT) on collateral circulation of pancreatic portal hypertension (PPH).Material and Methods the abdominal CT images of 52 patients with PPH confirmed by pathology the Affiliated Hospital of Southwest Medical University from August 2013 to May 2015 were analyzed retrospectively.The collateral circulations of portal vein were recorded.Results There were 21 (40.4％) patients with isolated splenic vein occlusion (ISVO),and 32 (59.6％) patients with non isolated splenic vein occlusion (NISVO) in the total 52 patients.There was no significant difference in the occurrence rate between ISVO and NISVO (x2=1.92,P＞0.05).The main collateral pathways of PPH were pathway Type Ⅰ (28 patients)and pathway Type Ⅲ (22 patients),and 2 patients belonged to pathway Type Ⅱ.The patients in pathway Type Ⅰ or Ⅲ were significantly more than patients in pathway Type Ⅱ(P＜0.01).There were 92.3％ (48/52) of patients with gastroepiploic varicosity,which is significantly higher than other varicose veins (P＜0.001).The significant difference was found between the patients (21.2％) with gastric fundus varicosity and the patients (1.9％)with inferior segment esophageal varices (x2=9.42,P＜0.01).The patients with gastric fundus varicosity and right superior colic varicosity in NISVO were more than those in ISVO (x2=4.15,7.44,P＜0.05).Conclusion For PPH patients,the valuable features of collateral circulation can be revealed by multi-slices CT.