Answer by
Moma123 (1043)
Lung nodules are small masses of tissues that form in lungs, usually non cancerous in nature and can be cured. The main causes of lung nodules are fungal infection, tuberculosis, histoplasmosis, hydatid cyst, Wegener's granulomatosis, hematoma and vascular abnormalities. Lung nodules can also be caused by smoking, old injury to lungs or any previous fungal infection.