úlcera de Marjolin associada a ulcera？？o e osteomielite cr？nicas

this report describes a 78-year old male patient with a chronic venous ulcer on his left leg for the past 24 years, complicated by a squamous-cell carcinoma. after staging of the disease, the treatment administered was amputation of the leg above the knee. marjolin's ulcer consists of the malignant transformation of a chronic ulcerative lesion. it is a relatively rare phenomenon. the malignant tumor most commonly described in the literature is squamous cell carcinoma, followed by basal-cell carcinoma, sarcoma and melanoma. the pathogenesis of marjolin's ulcer remains to be fully clarified.