40 Year old gentlemen had severe acute pancreatitis with CTSI 10 with organ failure and require BIPAP support in 1st week of illness . He recovered from acute illness after 3 week of hospitalization but developed fever in 6th week of illness. CECT Abdomen done which showed large collection in lessor sac near body of pancreas. EUS guided drainage of Walled off necrosis done and biflange metal stent placed for continuous drainage. Patient asymptomatic after procedure.