A small number of cases of cigarette-smoking-associated respiratory bronchiolitis (RB) with posit... more A small number of cases of cigarette-smoking-associated respiratory bronchiolitis (RB) with positive findings on the chest radiograph have been reported in the literature. High-resolution computed tomography (HRCT) findings are available in even fewer cases. We describe the case of an asymptomatic female smoker presenting with a reticulomicronodular infiltrate on a routine chest radiograph. High-resolution CT was characterized by ground-glass opacities and centrilobular micronodules with an upper lobe predominance. Surgical biopsy revealed peribronchiolar lesions, with accumulation of brown pigmented macrophages in the lumen of alveolar and bronchiolar lumen, consistent with the pathologic diagnosis of RB.
A case of cystic pulmonary metastases from a renal origin simulating lung histiocytosis on high-r... more A case of cystic pulmonary metastases from a renal origin simulating lung histiocytosis on high-resolution CT is presented. This diagnosis was suggested because of the presence of cystic lung lesions, micronodules and recurrent pneumothoraces in a male smoker. The diagnosis was reviewed after lung biopsy and demonstration of a renal mass.
A small number of cases of cigarette-smoking-associated respiratory bronchiolitis (RB) with posit... more A small number of cases of cigarette-smoking-associated respiratory bronchiolitis (RB) with positive findings on the chest radiograph have been reported in the literature. High-resolution computed tomography (HRCT) findings are available in even fewer cases. We describe the case of an asymptomatic female smoker presenting with a reticulomicronodular infiltrate on a routine chest radiograph. High-resolution CT was characterized by ground-glass opacities and centrilobular micronodules with an upper lobe predominance. Surgical biopsy revealed peribronchiolar lesions, with accumulation of brown pigmented macrophages in the lumen of alveolar and bronchiolar lumen, consistent with the pathologic diagnosis of RB.
A case of cystic pulmonary metastases from a renal origin simulating lung histiocytosis on high-r... more A case of cystic pulmonary metastases from a renal origin simulating lung histiocytosis on high-resolution CT is presented. This diagnosis was suggested because of the presence of cystic lung lesions, micronodules and recurrent pneumothoraces in a male smoker. The diagnosis was reviewed after lung biopsy and demonstration of a renal mass.
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