title: Pyoderma gangrenosum.
mesh_terms: D003937:Diagnosis, Differential; D005549:Foreign-Body Reaction / Q000175:diagnosis*; D005734:Gangrene / Q000175:diagnosis; D006801:Humans; D011183:Postoperative Complications / Q000175:diagnosis*; D011711:Pyoderma / Q000175:diagnosis*