[Pathology, prevention and therapy of decubitus ulcer. 4. Recurrent decubitus ulcer as a cause of a malignant tumor].
D006801:Humans; D008161:Lumbosacral Region; D003668:Pressure Ulcer / Q000150:complications*; D012008:Recurrence; D012878:Skin Neoplasms / Q000209:etiology*