CT Scan (CAT Scan, Computerized Axial Tomography): What is a CT scan? Computerized tomography scans (CT scans) are important diagnostic tools for a variety of medical conditions. Some areas of the body frequently evaluated by CT scans include the brain, neck, spine, chest, abdomen, pelvis, and sinuses. The CT scan process uses X-rays and a computer to produce cross-sectional images of the body.

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Solitary Pulmonary Nodule A solitary pulmonary nodule (SPN) is a single lung abnormality. Causes of a solitary pulmonary nodule include neoplastic growths, sarcomas, infectious agents, inflammatory conditions, congenital malformations, and a miscellaneous group of causes. Most people do not know they have a solitary pulmonary nodule as it is generally discovered as an incidental finding. Treatment for solitary pulmonary nodule depends on the size and characteristics of the nodule.