Whatever the cause of acute pancreatitis, in 5% of such patients, infected collections accumulate in the lesser sac. These infected pancreatic pseudocytes, peripancreatic abscesses or intrapancreatic abscesses, are usually diagnosed 14-21 days after the onset of acute pancreatitis. They are manifested by fever, leucocytosis, abdominal distension and a palpable abdominal mass. The mortality from pancreatic abscess is high upto 51%. Ultrasonography or computed tomography provide a diagnostic and therapeutic modality for this condition.