胆囊收缩功能减退、胆汁淤积是促发胆石形成的重要因素。在众多调节胆囊运动的体液因素中 ,前列腺素被认为是一种抑制胆囊收缩的介质 ,Ｄａｓ等[1] 报道 ,前列腺素抑制剂阿司匹林 (Ａｓｐ)可改善胆石症患者胆囊排空[2 ] 。我们用超声法观察无症状胆囊结石 (ａｓｙｍｐｔｏｍａ Gallbladder contraction dysfunction, cholestasis is an important factor in promoting gallstone formation. Among many humoral factors that regulate gallbladder movement, prostaglandins are considered as a mediator of cholecystokinin contraction. Das et al. [1] reported that prostaglandin inhibitor aspirin can improve gallbladder emptying in patients with cholelithiasis [2]. We used ultrasound to observe asymptomatic gallstone (asymptoma