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The first usage of "ground-glass opacity" by a major radiological society occurred in a 1984 publication of the American Journal of Roentgenology. It was published as part of a glossary of recommended nomenclature from the Fleischner Society, a group of thoracic imaging radiologists. [23]
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.
Fleischner sign is a radiological sign that aids the diagnosis of pulmonary embolism. [1] The sign indicates the dilatation of the proximal pulmonary arteries due to pulmonary embolism. [2] It was named after Felix Fleischner, who first described it. [3] The Fleishner sign is seen both on X-ray and CT scan of chest/thorax.
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.
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.
Some major changes in 2025 include a new $2,000 out-of-pocket max under Part D, eliminating the plan’s “donut hole” coverage gap, and fewer Medicare Advantage plans. As of January 1st, five ...
From 1999 to 2020, the number of alcohol-related deaths has nearly doubled, according to Florida Atlantic University study. A researcher and addiction specialists discuss the risk factors.
The Fleischner Society is an international, multidisciplinary medical society for thoracic radiology, dedicated to the diagnosis and treatment of diseases of the chest. . Founded in 1969 by eight radiologists whose predominant professional interests were imaging of chest diseases, the Society was named in memory of Felix Fleischner, an inspiring educator, clinician, and researcher who made ...