title: From simple plaque to necrotic ulcer.
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007871:Leg Ulcer / Q000209:etiology; D008297:Male; D008875:Middle Aged; D009336:Necrosis; D011711:Pyoderma / Q000150:complications*; D012883:Skin Ulcer / Q000209:etiology*