Evaluation of Benign Pulmonary Lesions Less Than 20mm in Diameter by Thin-Section Computed Tomography
非癌性病変(20mm以下の)のthin‐section CT画像を用いた解析 肺癌との鑑別を中心に

Seiji Shiotani, Kouzo Yamada, Fumihiro Oshita, Ikuo Nomura, Kazumasa Noda, Michihiko Tajiri, Makoto Ishibashi, Youichi Kameda, Masahiro Kaneko, Kazuro Sugimura
1997 Haigan  
To establish diagnostic criteria for small solitary pulmonary nodules, the findings of thin-section computed tomography (CT) were compared with pathological findings. We evaluated thin-section CT images and compared them with pathological findings in 23 specimens of resected benign lesions less than 20mm in diameter located in the peripheral region. The thin-section CT images were reconstructed using 2mm thick sections taken by TCT-900S, HELIX ( Toshiba, Tokyo) and were examined with two
more » ... ned with two different windows and level settings. In every case, the surgical specimens were sliced transversely to correlate with the CT findings. The thin-section CT images were classified into two types; solid and air-containing types. The former consisted of benign pulmonary tumors, granulomas and some focal fibrosis, while the latter all consisted of focal fibrosis. Both types were difficult to distinguish from peripheral lung cancer based only on margin analysis of the lesion, but analysis of how pulmonary vessels relate to the lesion can allow benign pulmonary lesions to be distinguished from peripheral lung cancer.
doi:10.2482/haigan.37.47 fatcat:bx4johy3ufeqxfjb6qxr7xsqsy