Kohno N, Ikezoe J, Johkoh T, Takeuchi N, Tomiyama N, Kido S, Kondoh H, Arisawa J, Kozuka T
Department of Radiology, Oska University Medical School, Japan.
Radiology. 1993 Oct;189(1):119-23. doi: 10.1148/radiology.189.1.8372180.
To clarify the computed tomographic (CT) features of focal organizing pneumonia.
The authors retrospectively studied CT scans of 18 patients with histologically proved focal organizing pneumonia. Chest radiographs in all 18 patients suggested bronchogenic carcinoma.
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).
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.
明确局灶性机化性肺炎的计算机断层扫描（CT）特征。
作者回顾性研究了18例经组织学证实为局灶性机化性肺炎患者的CT扫描结果。所有18例患者的胸部X线片均提示支气管源性癌。
18个病灶中的17个（94%）边缘不规则，10个（56%）有卫星灶，9个（50%）有胸膜尾征，9个（50%）有空气支气管征。肺炎可分为三种类型：A型（n = 5）为小圆形肿块（胸膜尾征，n = 4）。B型（n = 7）为椭圆形肿块，与胸膜广泛接触（卫星灶及外周血管汇聚，n = 6）。C型（n = 6）为沿支气管血管束的椭圆形肿块（卫星灶，n = 3；胸膜尾征，n = 4）。
局灶性机化性肺炎的CT特征变化较大，一些B型和C型病灶提示为良性病变。然而，即使采用CT检查，其他病灶可能也难以与支气管源性癌相鉴别。
