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  2. Lung nodule - Wikipedia

    en.wikipedia.org/wiki/Lung_nodule

    There may also be multiple nodules. One or more lung nodules can be an incidental finding found in up to 0.2% of chest X-rays [3] and around 1% of CT scans. [4] The nodule most commonly represents a benign tumor such as a granuloma or hamartoma, but in around 20% of cases it represents a malignant cancer, [4] especially in older adults and ...

  3. Cannonball sign - Wikipedia

    en.wikipedia.org/wiki/Cannonball_sign

    The cannonball sign is a radiological term used to describe the presence of multiple, well-circumscribed, round opacities seen on X-ray or CT imaging, typically in the lungs. [1] This finding is most commonly associated with hematogenous metastases, where malignant cells spread to the lungs via the bloodstream, forming discrete nodules that ...

  4. Lung cancer screening - Wikipedia

    en.wikipedia.org/wiki/Lung_cancer_screening

    Calcified lung nodule seen on Low Dose Chest CT (circled) Calcified lung nodule seen on Standard Dose Chest CT (circled) Systematic examination of lung cancer screening began in the 1970s when the National Cancer Institute (NCI) sponsored clinical trials to examine chest x-rays and sputum cytology at Johns Hopkins , Memorial Sloan-Kettering ...

  5. Tuberculoma - Wikipedia

    en.wikipedia.org/wiki/Tuberculoma

    Pulmonary tuberculomas are among the most common benign nodules, with 5%-24% of all resected nodules being of tuberculous origin. [21] In areas of lower prevalence, such as the United States, they are most commonly seen in the setting of an acquired immunodeficiency . [ 23 ]

  6. Granuloma - Wikipedia

    en.wikipedia.org/wiki/Granuloma

    "Pulmonary hyalinizing granuloma" is a lesion characterized by keloid-like fibrosis in the lung and is not granulomatous. Similarly, radiologists often use the term granuloma when they see a calcified nodule on X-ray or CT scan of the chest. They make this assumption since granulomas usually contain calcium, although the cells that form a ...

  7. Lung cancer - Wikipedia

    en.wikipedia.org/wiki/Lung_cancer

    Lung cancer is the most diagnosed and deadliest cancer worldwide, with 2.2 million cases in 2020 resulting in 1.8 million deaths. [3] Lung cancer is rare in those younger than 40; the average age at diagnosis is 70 years, and the average age at death 72. [2] Incidence and outcomes vary widely across the world, depending on patterns of tobacco use.

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