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CT features of rounded atelectasis
1Wessex Bodyscanner Unit, Southampton General Hospital, Hants, England.
AJR. American Journal of Roentgenology
|August 1, 1989
Summary
Rounded atelectasis, a lung collapse mimicking tumors on X-rays, is characterized by specific CT findings. These findings aid in its radiological diagnosis, differentiating it from neoplastic conditions.
Area of Science:
- Radiology
- Pulmonology
- Medical Imaging
Background:
- Rounded atelectasis, also known as folded lung syndrome, presents as pulmonary collapse linked to pleural thickening.
- It can be misdiagnosed as a neoplasm on standard chest radiographs.
Purpose of the Study:
- To analyze computed tomography (CT) findings in rounded atelectasis.
- To compare these findings with existing diagnostic criteria.
- To assess the characteristic CT features for accurate diagnosis.
Main Methods:
- Radiological diagnosis of rounded atelectasis in nine patients over 1-6 years.
- Analysis of CT scans from 13 affected lung examples (including four bilateral cases).
- Comparison of observed CT features against established diagnostic criteria.
Main Results:
- CT scans revealed a rounded mass, 3.5-7.0 cm in diameter, adjacent to thickened peripheral pleura in all cases.
- The hilum-adjacent margin was blurred by entering vessels in 92% of cases.
- CT findings were consistent and characteristic of rounded atelectasis.
Conclusions:
- CT imaging provides characteristic findings for diagnosing rounded atelectasis.
- The described CT features can help differentiate rounded atelectasis from lung neoplasms.
- CT is a valuable tool for the radiological diagnosis of this condition.