Pulmonary edema is a condition of excess fluid within the lung that most frequently is caused by a backup in pulmonary circulation commonly associated with congestive heart failure (CHF).A commonly cause is coronary artery disease, in which blood flow to the heart muscle is restricted. This weakens the heart and results in inadequate pulmonary circulation, causing a backup of blood in the lungs. The condition is seen on chest radiographs as a diffuse in crease in radio density in the hilar regions fading toward the periphery of the lung, and as increased air-fluid levels with horizontal beam projection in more severe conditions.
Reactivation (secondary) tuberculosis usually develops in adults and generally is first evident on radiography bilaterally in the upper lobes as irregular calcifications that are mottle in appearance. Upward retraction of the hila is frequently evident. As healing occurs, fibrous tissue develops with calcification surrounding the region and leaving a type of cavity that can be seen on tomograms of this region. AP lordotic projections are frequently requested for visualization of calcifications and cavitations of apices and upper lobes.
- 8 years agoFavorite Answer