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A lung nodule or pulmonary nodule is also called a spot on your lung. It is usually round or oval in shape.Lung nodules are easy to find using chest-x-ray or, more often, a chest CT scan. Pulmonary nodules are found in 1 out of every 4 chest CT scans. Most pulmonary nodules (more than 90%) are benign and not cancerous. However, they need to be examined and watched closely, because some could be a small cancer Finding cancers early, when they are small and curable, is the goal of a screening program. Benign or non-cancerous nodules can be caused by previous infections or old surgery scars.
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