What is the canceration rate of 7mm nodules in the lung

Imaging findings for diameter less than or equal to 3 cm, focal circular density increased solid and subsolid lung shadow called pulmonary nodules. If the pulmonary nodules greater than 7 mm, should be done regular follow-up, benign and malignant diagnosis of pulmonary nodules has important significance. In the follow-up process, if there are the following changes, more considered malignant, that is, cancerous situation: first, diameter increased, doubling time in line with the law of tumor growth; Second, the lesions were stable or enlarged, and showed solid components; third, the lesions were reduced, but showed solid components or increased solid components; fourth, angiogenesis was consistent with the rules of malignant pulmonary nodules.