Endoscopic ultrasound diagnostic gain over computed tomography and magnetic resonance cholangiopancreatography in defining etiology of idiopathic acute pancreatitis

Table 2 Frequencies of acute pancreatitis etiologies at endoscopic ultrasound according to the type of previous negative exam/s

	Type of previous negative exam/s
Type of AP etiology at EUS	US	CECT	MRCP	US + CECT	US + MRCP	CECT + MRCP	US + CECT + MRCP
Biliary; microlithiasis/biliary sludge	20%; 10%	16%; 5%	17%; 17%	19%; 7%	18%; 18%	14%; 14%	16%; 16%
Acute on chronic	37%	29%	38%	32%	39%	33%	37%
Solid or cystic lesions	15%	14%	17%	15%	18%	19%	21%
Pancreas divisum	3%	6%	4%	5%	4%	5%	5%
Anomalous pancreaticobiliary junction	6%	6%	4%	7%	4%	5%	5%
Autoimmune criteria	6%	3%	4%	5%	4%	5%	5%
Idiopathic	13%	26%	16%	17%	3%	9%	11%

AP: Acute pancreatitis; CECT: Contrast enhanced computed tomography; EUS: Endoscopic Ultrasound; MRCP: Magnetic resonance cholangiopancreatography; US: Ultrasound.