Bladder cancer remains a significant cause of morbidity and mortality in the United States, with mortality related predominantly to metastasis. Approximately 70% of newly diagnosed cases of bladder cancer represent superficial disease that, despite a high risk of local recurrence, rarely progress to invasive or metastatic disease. The present cases demonstrate isolated pulmonary metastases associated with low-grade superficial bladder cancer, without previous evidence of muscle-invasive disease.
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