3%) out of 21 patients in the Diclofenac suppository AZD0530 group and whereas in control group pancreatitis was noted in 4 (19.0%) out of 21 patients with non significant P-value > 0.05. Whereas Asymptomatic hyperamylasemia occurred in 1 (4.8%) out of 21 patients in the

diclofenac group and in controlled group 7 (33.3%) out of 21 patients With the significant P-value = 0.045. Conclusion: Prophylactic administration of rectal NSAIDs significantly reduces the incidence of post-ERCP asymptomatic hyperamylasemia P-value0.045, but not reduces the incidence of pancreatitis. Further large randomized controlled trials are required before its introduction into routine care. Key Word(s): 1. Nonsteroidal anti-inflammatory drugs; 2. endoscopic retrograde cholangiopancreatography; 3. Post-ERCP pancreatitis; Presenting Author: WOO HYUN PAIK Additional Authors: DONG WAN SEO, JUN-HO CHOI, YONG-PIL CHO, DO HYUN PARK, SANG SOO LEE, SUNG KOO LEE, MYUNG-HWAN KIM Corresponding Author: DONG WAN SEO Affiliations: Asan Medical AP24534 Center Objective: We evaluated the clinical usefulness of the combination of color Doppler and contrast-enhanced harmonic EUS (CEH-EUS) in diagnosing visceral vascular diseases and in assessing morphological and hemodynamic characteristics required for adequate patient management. Methods: EUS was performed in 12 patients with clinically suspected

visceral vascular disease, as determined by computed tomography (CT) scan between February, 2012, and March, 2013. Conventional B-mode EUS, color Doppler EUS and CEH-EUS was done to evaluate vascular status of celiac artery (CA) and superior mesenteric artery (SMA). Results: We assessed a total of 12 patients. CT suggested dissection of the CA, SMA, and their branch arteries in nine patients; stenosis or occlusion of the splanchnic vessels in two patients; and periarterial MCE soft tissue cuffing surrounding the CA in one patient. EUS correctly

identified all the visceral vascular lesions in 11 patients: eight visceral artery dissection and three mesenteric artery stenosis. One patient in suspicion of SMA dissection on CT was proved to be normal by EUS. EUS also identified one undefined dissection not detected on abdominal CT. EUS showed an intimal flap in five patients and blood flow of the true lumen and thrombi of the false lumen in eight patients. In addition, the stenotic area could be calculated using color Doppler EUS. Two patients underwent surgical thrombectomy and angioplasty because there was total occlusion of SMA on color Doppler and CEH-EUS. EUS showed no flow signal within a long segment of the SMA, indicating its total occlusion, in both patients. Conclusion: The combination of color Doppler and CEH-EUS may be a promising diagnostic modality to assess the splanchnic artery without exposure to radiation. Moreover, EUS is a useful tool in determining appropriate treatments for patients with isolated mesenteric artery dissection. Key Word(s): 1. EUS; 2. Diagnosis; 3.