ERP findings on day 3. The placement of pancreatic endoscopic nasopancreatic drainage (ENPD) tube (white arrowhead) and endoscopic retrograde pancreatic drainage (ERPD) tube (black arrowhead) under ERP in a supine position on day 3. The black arrows point to the knitted strings in the packed gauzes. The white arrowheads represent ENPD tube. The black arrowheads represent ERPD tube