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Vol.46 No.1 contents | Japanese/English |
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- The 31st Diagnostic Imaging Seminar -
'Faint' Peripheral Lung Cancer: Chest X-ray, CT, and Pathologic Correlation
Masahiko Kusumoto1Division of Diagnostic Radiology, 1National Cancer Center Hospital, Japan
On the diagnosis by chest X-ray, factors for the failure to detect lung cancer are as follows, 1) lesions superimposing on existing structures, 2) lesions accompanied by atelectasis, 3) lesions that are small and faint. In particular, small lung cancers with ground glass opacity on high-resolution CT can be well-differentiated adenocarcinomas with alveolar replacement growth, they are detected as ill-defined, faint and small patchy shadows on the chest X-ray. Characteristic findings of such well-differentiated adenocarcinomas on high resolution CT are ground glass attenuation in marginal area of the lesion, internal solid attenuation and airbronchograms in the solid part. On the occasion of diagnosis by chest X-ray, it is vital to pay attention to the above.
key words: Lung cancer, High resolution CT, Chest X-ray, Diagnostic error
JJLC 46 (1): 59-63, 2006
