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A． Spiculated sign is highly associated with malignancy
B． Spiculated sign refer to neoplastic infiltration, edema of the surrounding tissues and obliteration of the small vessels and bronchioles
C． Vessel convergence sign has higher incidence in malignant nodules than in benign ones
D． Vessel convergence refers to vessels feeding the tumor
E． Smooth margin is more likely benign unless metastatic in origin