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The various faces of right upper lobe atelectasis.
1Department of Radiology, Veterans Affairs Medical Center, Cincinnati, OH.
Critical Reviews in Diagnostic Imaging
|January 1, 1991
Summary
Neoplasms obstructing the right upper lobe (RUL) bronchus are the most common cause of RUL atelectasis in adults. Radiographic signs include fissure approximation and indirect indicators like increased lobe density and mediastinal shifts.
Area of Science:
- Radiology
- Pulmonology
Background:
- Right upper lobe (RUL) atelectasis is frequently caused by bronchial obstruction.
- Neoplasms are the leading cause, followed by scarring from chronic infections.
Purpose of the Study:
- To review the radiographic signs of RUL atelectasis.
- To differentiate direct and indirect signs for accurate diagnosis.
Main Methods:
- Review of radiographic findings in adult patients with RUL atelectasis.
- Analysis of direct and indirect imaging signs.
Main Results:
- The direct sign of atelectasis is fissure approximation.
- Indirect signs include increased lobe density, mediastinal displacement, diaphragmatic elevation, and hilar elevation.
Conclusions:
- Accurate diagnosis of RUL atelectasis relies on recognizing direct and indirect radiographic signs.
- Understanding these signs aids in identifying the underlying causes, such as neoplasms.