What is Oligemic lung field?
Westermark sign is a chest x-ray finding of oligaemia (clarified area) distal to a large vessel that is occluded by a pulmonary embolus. The focal area of increased translucency due to oligaemia is caused by impaired vascularisation of the lung due to primary mechanical obstruction or reflex vasoconstriction.
What causes opacities in the lungs?
Causes of pulmonary opacity Chronic: Lymphangitic metastasis, sarcoidosis, eosinophilic granuloma, collagen vascular diseases, inhalation injuries, idiopathic pulmonary fibrosis (“fibrosing alveolitis”), resolving pneumonia.
What is an infiltrate in the lung?
A pulmonary infiltrate is a substance denser than air, such as pus, blood, or protein, which lingers within the parenchyma of the lungs. Pulmonary infiltrates are associated with pneumonia, and tuberculosis. Pulmonary infiltrates can be observed on a chest radiograph.
What does haziness in the lung mean?
pulmonary edema (fluid build-up in the lung or its blood vessels) seen as diffuse haziness on the lung fields (for example, from congestive heart failure); enlarged heart size (or cardiomegaly);
When should I worry about lung nodules?
Most lung nodules are benign, or non-cancerous. In fact, only 3 or 4 out of 100 lung nodules end up being cancerous, or less than five percent. But, lung nodules should always be further evaluated for cancer, even if they’re small.
What can a CT scan detect in the lungs?
A CT scan of the chest can help find problems such as infection, lung cancer, blocked blood flow in the lung (pulmonary embolism), and other lung problems. It also can be used to see if cancer has spread into the chest from another area of the body.
What will a lung CT scan show?
Although the CT scan cannot give a definitive diagnosis, it is helpful in the evaluation of lung diseases and conditions such as pneumonia, cancer, blood clots or damage caused by smoking.
Can a lung nodule go away?
If the nodule in your lung is benign, it may be the result of an infection or inflammation. It might also be scar tissue from a previous infection. If the nodule is very small, your doctor may have you take antibiotics for a few weeks to see if the nodule goes away.
What kind of infections cause lung nodules?
Infections: Infectious causes of nodules may include bacterial infections such as tuberculosis and other mycobacterial infections, fungal infections such as histoplasmosis, blastomycosis, aspergillosis, and coccidiomycosis, and parasitic infections such as ascariasis (roundworms), echinococcus (hydatid cysts), and …
Can a virus cause lung nodules?
Benign pulmonary nodules can be caused by various things. Some of the causes include: Bacterial, fungal, or viral infections. This is usually an old infection that is no longer active, but it can sometimes be a current, active infection.
Can mold cause nodules in lungs?
The mold spores can colonize (grow) inside lung cavities that developed as a result of chronic diseases, such tuberculosis, emphysema, or advanced sarcoidosis. The fibers of fungus might form a lump by combining with white blood cells and blood clots. This lump or ball of fungus is called an aspergilloma or mycetoma.