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CT appearances of rounded atelectasis.
1Department of Radiology, Royal Canberra Hospital, Canberra ACT.
Australasian Radiology
|November 1, 1992
Summary
Rounded atelectasis (RA) on CT scans often presents with varied appearances, including atypical forms. These lesions typically do not require biopsy, even when unexpected, supporting conservative management.
Area of Science:
- Radiology
- Pulmonary Medicine
- Pathology
Background:
- Rounded atelectasis (RA) is a rare condition characterized by lung collapse.
- Computed tomography (CT) is crucial for diagnosing RA, but its appearances can vary.
- Understanding the spectrum of RA CT findings is important for appropriate patient management.
Observation:
- Five patients with CT-diagnosed RA were managed conservatively without biopsy.
- Atypical RA variants were identified in contralateral lung regions in three patients.
- One atypical lesion, biopsied during thoracotomy, confirmed benignity.
Findings:
- CT findings of RA exhibit a spectrum of appearances, including atypical presentations.
- Conservative management without biopsy is often sufficient for RA, even for unexpected lesions.
- Biopsy of an atypical lesion confirmed it as a benign variant of RA.
Implications:
- The spectrum of CT appearances for rounded atelectasis is broader than previously recognized.
- Atypical RA lesions seldom require invasive investigation, supporting non-operative management.
- Observed atypical RA presentations may support the fibrosing theory of RA pathogenesis.