Serendipitous detection of lung cancer on hepatic imaging

A case of a primary lung carcinoma involving the left pulmonary hilum serendipitously detected utilizing hepatic imaging is presented. Malignant stimulation of the reticuloendothelial system resulted in diffuse pulmonary uptake of Tc-99m sulfur colloid, however, only the right lung was visualized. Subsequently, a chest radiograph and computed tomography of the chest demonstrated massive malignant involvement of the left pulmonary hila, adjacent mediastinum, and left atrium. Transbronchial biopsy revealed anaplastic small cell carcinoma.