Describir: Autologous Platelet Rich Plasma in Pyoderma Gangrenosum ‑ Two Case Reports...Toyozawa S, Yamamoto Y, Nishide T, Kishioka A, Kanazawa N, Matsumoto Y, et al. Case report: A case of pyoderma gangrenosum with intractable leg ulcers treated by allogeneic cultured dermal substitutes. Dermatol Online J 2008;14:17.