Abstract:
PURPOSE:To clarify the computed tomographic (CT) features of focal organizing pneumonia. MATERIALS AND METHODS:The authors retrospectively studied CT scans of 18 patients with histologically proved focal organizing pneumonia. Chest radiographs in all 18 patients suggested bronchogenic carcinoma. RESULTS:Seventeen of the 18 lesions (94%) had an irregular margin, 10 (56%) had satellite lesions, nine (50%) had a pleural tag, and nine (50%) had an air bronchogram. The pneumonia could be classified into three types: Type A (n = 5) was a small round mass (pleural tag, n = 4). Type B (n = 7) was an oval mass with broad contact with the pleura (satellite lesions and convergence of peripheral vessels, n = 6). Type C (n = 6) was an oval mass along the bronchovascular bundle (satellite lesions, n = 3; pleural tag, n = 4). CONCLUSION:The CT features of focal organizing pneumonia show wide variation, and some type B and C lesions are suggestive of benign lesions. However, other lesions may be difficult to differentiate from bronchogenic carcinoma even with CT.
journal_name
Radiologyjournal_title
Radiologyauthors
Kohno N,Ikezoe J,Johkoh T,Takeuchi N,Tomiyama N,Kido S,Kondoh H,Arisawa J,Kozuka Tdoi
10.1148/radiology.189.1.8372180subject
Has Abstractpub_date
1993-10-01 00:00:00pages
119-23issue
1eissn
0033-8419issn
1527-1315journal_volume
189pub_type
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