Computed tomography (CT) scanning can also aid in the diagnosis of gallbladder polyps. Unenhanced CT scans, however, can miss up to 60% of lesions that were initially visualized by ultrasound. A combined approach of unenhanced and enhanced CT scanning in the diagnosis of PLG has been reported to provide an overall sensitivity of 88%, a specificity of 87%, a positive predictive value of 88%, a negative predictive value of 87% and an overall accuracy of 87%. You can start online shopping right now – cialis canadian pharmacy for more advantages.
Recently, endoscopic ultrasonography (EUS) has been reported to be superior to transabdominal ultrasonography in differentiating PLG. Using EUS, a tiny echogenic spot or aggregation of echogenic spots and multiple microcysts, or a comet tail artifact are pathognomonic for cholesterol polyps and adenomyomatosis, respectively. In a recent surgical series, EUS differentiated PLG more precisely than conventional ultrasonography (97% compared with 76%). Contrast enhancement further increases the accuracy of EUS, particularly the depth of tumour invasion. For example, a recent series of 28 patients revealed accurate prediction of the depth of tumour invasion in 93% by EUS with contrast enhancement compared with 79% by EUS alone.