A surgical implant (10) comprises an areal flexible porous basic structure (12) having a first face and a second face. At least one resorbable dyed film piece (20) is attached to the basic structure (12) and comprises a plurality of solid protrusions emerging from the dyed film piece (20) in a direction away from the basic structure (12). The at least one dyed film piece (20) is arranged in a shape structure which is asymmetric (E) in the area of the basic structure (12). Optionally the implant (10) further comprises an adhesion barrier sheet (16).
