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  2. Lung nodule - Wikipedia

    en.wikipedia.org/wiki/Lung_nodule

    A solitary pulmonary nodule (SPN) or coin lesion, [1] is a mass in the lung smaller than three centimeters in diameter. A pulmonary micronodule has a diameter of less than three millimetres. [2] 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 ...

  3. Air bronchogram - Wikipedia

    en.wikipedia.org/wiki/Air_bronchogram

    Lung nodules. For lung nodules, air bronchograms used to be associated with infectious causes of consolidation and, therefore to be benign. However, in the setting of a lung nodule, an air bronchogram is actually more frequent in malignant than in benign nodules. [1][4] studied the tumour-bronchus relationship and described five types: [1] In ...

  4. Diffuse idiopathic pulmonary neuroendocrine cell hyperplasia

    en.wikipedia.org/wiki/Diffuse_idiopathic...

    The findings on chest imaging in DIPNECH patients are bilateral and diffuse. The most frequent findings on a computed tomography (CT) of the chest are multiple primary nodules and/or masses, on a background of mosaic attenuation and airway wall thickening. [2] [9] The nodules have an indolent pattern of growth and are found throughout the lungs.

  5. Chest radiograph - Wikipedia

    en.wikipedia.org/wiki/Chest_radiograph

    A normal posteroanterior (PA) chest radiograph of someone without any signs of injury. Dx and Sin stand for "right" and "left" respectively. A chest radiograph, chest X-ray (CXR), or chest film is a projection radiograph of the chest used to diagnose conditions affecting the chest, its contents, and nearby structures.

  6. Tree-in-bud sign - Wikipedia

    en.wikipedia.org/wiki/Tree-in-bud_sign

    The tree-in-bud sign is a nonspecific imaging finding that implies impaction within bronchioles, the smallest airway passages in the lung. The differential for this finding includes malignant and inflammatory etiologies, either infectious or sterile. This includes fungal infections, mycobacterial infections such as tuberculosis or mycobacterium ...

  7. Ground-glass opacity - Wikipedia

    en.wikipedia.org/wiki/Ground-glass_opacity

    The adjacent normal lung tissue with lower attenuation appears as darker areas. Ground-glass opacity (GGO) is a finding seen on chest x-ray (radiograph) or computed tomography (CT) imaging of the lungs. It is typically defined as an area of hazy opacification (x-ray) or increased attenuation (CT) due to air displacement by fluid, airway ...

  8. Adenocarcinoma in situ of the lung - Wikipedia

    en.wikipedia.org/wiki/Adenocarcinoma_in_situ_of...

    Adenocarcinoma in situ (AIS) of the lung —previously included in the category of " bronchioloalveolar carcinoma " (BAC)—is a subtype of lung adenocarcinoma. It tends to arise in the distal bronchioles or alveoli and is defined by a non-invasive growth pattern. This small solitary tumor exhibits pure alveolar distribution (lepidic growth ...

  9. 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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