Objective:To explore the CT manifestations of non-functional islet cell tumor（NFICT）Methods:The findings of plain and enhancement CT scanning from 17 cases with NFICT, which were confirmed by the surgeries and pathological sections, were analyzed retrospectively. Ninty ml of non-ioniodine contrast reagent with 3ml/s injection flow rate was employed as the enhancer for measuring the arteriovenous double phase CT value of the pancreas and tumor.Results:Tumors were found in all the cases who received CT scan. Compared with pancreatic substance in the CT plain scan, tumors with low density were found in 2 cases, tumors with mixed low density in 11 cases and tumors with isodensity in 4 cases. Local calcification in tumor was found in 5 cases. Various degrees of strengthening were showed in 17 cases with enhancement scanning. Obvious enhancement in arterial phase presented in 5 cases, moderate enhancement in 6 cases and slight enhancement in 6 cases.
Conclusions:CT plain scan of NFICT shows that the tumor margins are clear and some tumors have calcification. All tumors in the CT enhancement scanning show various degrees of enhancement, the persistent enhancement from arterial phase to portal vein phase is the characteristic manifestation of NFICT.