Introduction: Acute or chronic pancreatitis has been known to be associated with complications like Pseudocyst, pancreatic necrosis,splenic vein thrombosis, pancreatic ascites and pleural effusion. rarely do we find presentation of patient with cardiac tamponade and gross pericardial effusion due to pancreaticopericardial fistula. case report: We report a case of a 38-yearold male presented with chest tightness, abdominal fullness and dull aching abdominal pain. chest X-ray was suggestive of pericardial effusion which recurred immediately. contrastenhanced computed tomography (cEct) scan of abdomen revealed dilated MPD (main pancreatic duct), pseudocyst in head region extending up to epigastrium and communicating with collection under dome of diagphragm and with pericardial effusion. Endoscopic retrograde cholangiopancreaticography was performed, with pancreaticogram