CONCLUSION: In patients with ABP and no CBDS on ERCP, CBD microlithiasis is observed in the majority of patients, especially during the first day of the disease. Density of CBD microlithiasis is the highest in the first day of the disease. This suggests that CBD microlithiasis can be the cause and not the result of ABP. AIM: Common bile duct microlithiasis (CBDM) is found in majority of patients with acute biliary pancreatitis (ABP) and no CBD stones in fluoroscopy during urgent ERCP. It is unclear, however, weather CBDM is a cause or the result of the disease. This prospective study was done to investigate the presence and defray of CBDM in patients with ABP, when endoscopic retrograde cholangiopancreatography (ERCP) was done in different periods from the onset of the disease.
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