Items tagged “lungs”

Secondary pulmonary arterial hypertension includes all cases of pulmonary arterial hypertension except for those for which no cause is identified with are then termed idiopathic pulmonary arterial hypertension.  The classification of pulmonary arterial hypertension into primary and secondary ha...

Pulmonary metastases refer to distant tumor spread from a variety of primary tumors to the lungs via the blood or lymphatics. This article primarily describes hematogenous pulmonary metastases while lymphangitic carcinomatosis is discussed separately. Epidemiology Lung metastases are common. ...

There are only a few causes of a hyperattenuating pulmonary mass which can be often due to internal calcification. They include:  granuloma: most common pulmonary hamartoma bronchogenic carcinoma carcinoid tumors pulmonary metastases mucoid calcification of mucinous adenocarcinoma breast ...

Pulmonary cavities are thick-walled abnormal gas-filled spaces within the lung. They are usually associated with a nodule, mass, or area of consolidation. A fluid level within the space may be present. Plain radiography and CT form the mainstay of imaging. Terminology According to the Fleischn...

Congenital cystic bronchiectasis is a rare entity, and as the name suggests is characterized by cystic bronchiectasis found in infancy 1. The term appears to have fallen out of favor, due to variable use in older literature. In most instances of congenital cystic bronchiectasis has what is now r...

Mosaic attenuation is a descriptive term used in describing a patchwork of regions of differing pulmonary attenuation on CT imaging. It is a non-specific finding, although is associated with the following: obstructive small airways disease: low attenuation regions are abnormal and reflect ...

Hyperattenuating pulmonary abnormalities refer to lung parenchymal opacities/lesions that are generally higher attenuation on CT than most soft tissues. An exact definition is usually not provided 1-3, while some authors focus on abnormalities that are as subjectively opaque as bony structures 4...