Pilot clinical study on predicting nature of gallbladder polyp by measuring sizes in different directions, stalk width with gray scale ultrasound and contrast-enhanced ultrasound / 中华医学超声杂志（电子版）

ABSTRACT

Objective To evaluate clinical application of measuring the sizes in different directions and stalk width of gallbladder polyp lesions (GPL) ≥1.0 cm for differentiation diagnosis between cholesterol polyp and adenoma by both gray scale ultrasound (US) and contrast-enhanced ultrasound (CEUS). Methods From January to September 2016, a total of 81 patients with GPL ≥ 1.0 cm received cholecystectomy in our hospital were enrolled in this study. All participations underwent US and CEUS scanning before cholecystecomy. Patient′s clinical data, sizes in different directions, stalk width and features of US images were recorded. According to pathological findings, patients were divided into cholesterol polyp group and adenoma group. All of the clinical data, sizes, stalk width and features of US images were statistically analyzed. Patient′s age, size in vertical and parallel sizes, stalk width of GPL, ratio of vertical size to stalk width, ratio of parallel size to stalk width and ratio of vertical size to parallel size were compared with t-test. Genda, number and location of GPL, echoic level and blood flow signal were compared with the χ2test.Bivariate was used for relation analysis.Results There were difference in patient′s age,vasularity of GPL, size in vertical direction, size in parallel direction, stalk width, ratio of vertical size to stalk width, ratio of parallel size to stalk width[9(15.8%)vs 9(37.5%),(37.02±10.14)years old vs(52.25±13.85)years old, (0.94±0.33)cm vs(1.27±0.79)cm,1.10±0.37 vs 1.71±0.50,(0.26±0.10)cm vs(0.58±0.51)cm,3.82±1.87 vs 2.92±1.61],the differences were statistically significant(χ2=2.675,t=5.303,2.675,5.855,4.566,-2.536, all P<0.05), but no difference in ration of vertical size to parallel size between two groups (all P>0.05). Bivariate realtion analysis proved that size in vertical direction, size in parallel direction, stalk width and ratio of vertical size to stalk width were related with the nature of GPL≥1.0 cm (r=0.375, 0.571, 0.586, -0.342, all P<0.05). Conclusion Sizes in different directions and stalk width were important factors for predicting the nature of GPL ≥1.0 cm.