No abstract available

[en] In order to analyze radiographic findings of small peripheral adenocarcinoma of the lung, diagnostic xerotomograms of 43 cases of primary adenocarcinoma and 12 cases of non neoplastic lesions, which were less than 2 cm in diameter, were retrospectively examined. Small solitary peripheral mass densities on xerotomogram were classified into three groups; 1) solid type with well-defined margin, and moderate or high density 2) infiltrative type with ill-defined margin, and low density 3) mixed type consisting of the solid type and infiltrative type. In this study concerning small peripheral adenocarcinomas which were less than 2 cm in diameter, the characteristics of peripheral adenocarcinoma on radiograms, spicula, notch lobulation, involvement of surrounding bronchi or vessels, and involvement of more than two subsegments were distinctly demonstrated on xerotomograms, which had excellent edge enhancement and tolerance. Based on findings of spicula plus lobulation, it was possible to differentiate adenocarcinoma appearing as a small solid type solitary mass density from non neoplastic lesions. Furthermore, a new scoring system was presented based on the findings of the margin of the lesion, vascular and pleural involvements. There was a difference in the scores of adenocarcinoma and non-neoplastic lesions. To obtain more precise differential diagnosis of small solitary peripheral mass densities, it is necessary to accumulate more knowledge concerning radiologic-pathologic correlation and to obtain better quality of images. (author)

[en] The diagnostic value of high-resolution computed tomography has been assessed in 10 lung cancer patients with pulmonary infiltrates. This method was used to evaluate the radiographic appearance of the new pulmonary disease. The expectorated sputum of each patient was examined for a bacteriologic and cytologic diagnosis. In some patients, the flexible bronchofiberscopy that was accompanied by bronchoalveolar lavage was performed so as to establish the etiologic diagnosis. In conclusion, high-resolution computed tomography was found to be useful in diagnosing pulmonary complications in lung cancer patients. (author)