[Tessellated epithelium cancers in a traumatic chronic ulcer (author's transl)]

The major part of chronic skin ulcers resulting from a trauma show no tela peculiarities during the whole of their development apart from the formation of chronic granulation tissue. In a few cases there is a malign degeneration, which is often detected too late. Based on the experience of two cases, the necessity of exercising a precise control of their development is pointed out. This can be achieved by taking biopsies and by histological treatment.