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Pleuropulmonary blastoma, type III
A. The tumor occupies the entire thoracic cavity and extends into the mediastinum of this 4-year-old boy who presented with fever and respiratory failure.
B. Multiple resected fragments of this mass show foci of hemorrhage in this tannish-white, solid tumor. C. A mixture of rhabdomyoblasts, anaplastic tumor cells and small primitive malignant cells is one of several microscopic patterns in this complex sarcoma.
