Rinsho hoshasen. Clinical radiography
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In order to identify and classify the basic CT appearances of interstitial pneumonia, radiologic -pathologic correlative study was performed using inflated and fixed lungs from autopsy and surgery. The patterns of the abnormalities on the CT images of interstitial pneumonia were classified into 7 categories. ⋯ Based on the result of above study, we analyzed CT of 22 patients with IIP. The lesions which were classified into a hazy density, micronodular densities, confluence of various sized ring like shadows and subpleural bullous changes were frequently recognized together mostly in the periphery of the lung.
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A review of five cases of surgically proven bronchogenic cysts was undertaken. One case was mediastinal bronchogenic cyst and other four cases were pulmonary bronchogenic cysts. ⋯ They presented as cyst with air-fluid level, air-filled cyst, sharply delineated spherical, oval or lobulated mass shadow. Pulmonary bronchogenic cysts with homogeneous water-density shadow were not necessarily easy to be differentiated from malignant pulmonary neoplasm.