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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.
3. Nodule with poorly defined margins - Round density within the lung parenchyma, also called a tuberculoma. Nodules included in this category are those with margins that are indistinct or poorly defined (tree-in-bud sign [3]). The surrounding haziness can be either subtle or readily apparent and suggests coexisting airspace consolidation.
Caplan syndrome is a nodular condition of the lung occurring in dust-exposed persons with either a history of rheumatoid arthritis (RA) or who subsequently develop RA within the following 5–10 years. [3] The nodules in the lung typically occur bilaterally and peripherally, on a background of simple coal workers' pneumoconiosis. There are ...
Pulmonary function: increased residual volume, increased total lung capacity, fixed obstruction, low diffusing capacity of the lung for carbon monoxide that corrects with alveolar volume; High-resolution CT scan: diffuse pulmonary nodules 4–10 mm, greater than 20 nodules, mosaic attenuation or air trapping in greater than 50% of the lung
These are solitary lesions lying within the lung varying in size between 10 and 80 millimeters in diameter. [citation needed] There are four elements in this tumour: solid, papillary, sclerotic and hemangiomatous. These are present in variable proportions depending on the lesion. Calcification occurs in 40%.
This finding is not pathognomonic (diagnostic) of silicosis. In some cases, the pulmonary nodules may also become calcified. A computed tomography or CT scan can also provide a mode detailed analysis of the lungs, and can reveal cavitation due to concomitant mycobacterial infection.
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 ...
Calcification is the accumulation of calcium salts in a body tissue. It normally occurs in the formation of bone, but calcium can be deposited abnormally in soft tissue, [1] [2] causing it to harden. Calcifications may be classified on whether there is mineral balance or not, and the location of the calcification. [3]
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