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A seven-year-old boy presented to a community hospital with a three-week history of cough and weight loss without fever. He was treated with oral and then intravenous antibiotics, without clinical improvement. A chest radiograph suggested the presence of a large pleural effusion. Computed tomography revealed a large, irregular, anterior mediastinal mass that caused a midline shift of the mediastinum and compression of the left main bronchus, associated with a small pleural effusion and lesions in the liver and both kidneys. Thoracentesis was performed, and a cytocentrifugation preparation of the effusion was examined after WrightGiemsa staining. Some microscope fields showed what . . . [Full Text of this Article] |