Fibrin clot* refers to coagulated protein present
on the surface of an ulcer. A fibrin clot appears
clinically as a tan or yellow surface lesion usually
surrounded by an erythematous halo associated
with the ulcer. It can be rubbed off. There
may be a history of injury or a mucosal disease
associated with ulcers. Management should be
aimed at treating the cause of the ulcer, as the
fibrin clot resolves with the ulcer.