A.Cullen sign (bruising around the umblicus) B.Grey Turner sign(bruising of the flanks the area between last rib and the hip)
Reason??
extravasated pancreatic enzymes and their effects lead to these cutaneous discolorations.more detailed pathways of pacreatic enzymes are mentioned here : https://www.ncbi.nlm.nih.gov/m/pubmed/2910743/