A is cullen's sign for Acute pancreatitis ,B is grey turner's sign for retroperitoneal hemorrhage , when they occur simultaneously in same patient indicates pancreatic necrosis w/retroperitoneal bleeding. Gray Turner's alone could be due to other Causes of intraabdominal bleed like blunt trauma, ruptured ectopic pregnancy, raptured abdominal aorta etc.
A- Cullen's sign and B- Grey Turner's sign they are seen in acute pancreatitis.