Abstract
The usefullness of endoscopic ultrasonography (EUS) in the diagnosis of polypoid lesions of the gall bladder (GB) was evaluated. EUS was carried out in 37 cases with polypoid lesions of GB which had been confirmed histologically after surgery. EUS findings of them were compared with the pathological findings. EUS findings were classified into 5 types as follows. I type: small round high echoic mass, II type: mass composed of high echoic granules or short stripes, type: solid high echoic mass, IV type: solid low echoic mass, V type: solid low echoicI II m ass with scattered anechoic small cysts. Out of 22 cholesterol polyps,2 cases showed I type and others were II type. Adenomas and carcinomas in adenoma were described as IV type. Out of 3 carcinomas,1 case demonstrated II type and others were IV type. Adenomyomatosis showed V type. From above results, I and type were revealed in cholesterol polyps, IV type was mainly shown in carcinoma and adenoma, V type was often seen in adenomyomatosis. It was thought that polypoid lesions of GB could be qualitatively diagnosed by EUS to some extent
