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A lung nodule or pulmonary nodule is a relatively small focal density in the lung. 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.
The pathological definition published by the World Health Organization is “a generalized proliferation of scattered single cells, small nodules (neuroendocrine bodies), or linear proliferations of pulmonary neuroendocrine (PNE) cells that may be confined to the bronchial and bronchiolar epithelium.” [1] The true prevalence of this disease ...
The evaluation of a skin nodule includes a description of its appearance, its location, how it feels to touch and any associated symptoms which may give clues to an underlying medical condition. [4] Often discovered unintentionally on a chest x-ray, a single nodule in the lung requires assessment to exclude cancer. [9]
Usual interstitial pneumonia (UIP) is a form of lung disease characterized by progressive scarring of both lungs. [1] The scarring (pulmonary fibrosis) involves the pulmonary interstitium (the supporting framework of the lung). UIP is thus classified as a form of interstitial lung disease.
Rheumatoid lung disease is a disease of the lung associated with RA, rheumatoid arthritis. Rheumatoid lung disease is characterized by pleural effusion, pulmonary fibrosis, lung nodules and pulmonary hypertension. Common symptoms associated with the disease include shortness of breath, cough, chest pain and fever.
By pathology definition, it originates in the pleurae (rather than in the lung parenchyma). [4] A bulla has a wall thickness of less than 1 mm. [2] By radiology definition, it has a total size of greater than 1 cm. [3] By pathology definition, it originates in the lung parenchyma (rather than in the pleurae). [4]
Pulmonary carcinoid tumor; Pleuropulmonary blastoma; Neuroendocrine tumors of the lung [7] Lymphomas of the lung. [8] Sarcomas of the lung. [9] Some rare vascular tumors of the lung [8] Non-lung tumors which may grow into the lungs: Mediastinal tumors; Pleural tumors; Metastasis or secondary tumors/neoplasms with other origin: Metastasis to the ...
When a substance other than air fills an area of the lung it increases that area's density. On both x-ray and CT, this appears more grey or hazy as opposed to the normally dark-appearing lungs. Although it can sometimes be seen in normal lungs, common pathologic causes include infections, interstitial lung disease, and pulmonary edema. [2] [3]
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