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Five children with intrathoracic metastases from Wilms tumor are presented. In two patients pneumothoraces developed, and in one patient pneumonitis developed secondary to a primary intrabronchial metastasis. Two other patients had paraspinal widening from metastases to paraaortic or posterior mediastinal lymph nodes. These are extremely rare complications of metastatic Wilms tumor.
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Siegel et al. (1980) studied this question.
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