“…A case of pyoderma gangrenosum involved in female genitalia was reported in Korea (8). Two reported cases of penile pyoderma gangranosum were associated with systemic chronic lymphocytic leukemia (9) and ulcerative colitis (10) respectively, but the others occurred without any associated diseases. Pyoderma gangranosum is a disease entity diagnosed when other causes of purulent ulcerations, such as STD, multi-system disease, necrotizing faciitis, cutaneous metastatic Crohn's disease, deep fungal infection, pemphigus vegetans, Fournier's gangrene, neoplastic conditions, erosive lichen planus, trauma and factitious damage have been excluded.…”