项目教学法在《Flash动画制作》教学中的应用

Abstract

Differential diagnoses of chronic wounds on lower legs are diverse and are often missed in clinical routine. Typical causes like chronic venous insufficiency, peripheral arterial occlusive disease or diabetes are found via basic diagnostics, rare diagnoses like the existence of ulcerated skin tumors are often found with a delay which leads to a poor prognosis for these patients. Besides pre-existing tumors also a secondary malignant transformation can be observed, for example towards a squamous skin cancer from an originally vascular long-lasting leg ulcer. In case of recalcitrant leg ulcers despite exhausting all therapeutic options a histological investigation of a tissue sample should be performed and an initially diagnosed cause for the chronic wound has to be scrutinized.