However, the presence of tumor cells in the urine sediment without an obvious urothelial metastatic deposit is a rare phenomenon and in patients with lung cancer has never been reported.

• 在尿沉渣中发现肿瘤细胞而没有发现明显的尿道上皮的转移沉积物是一种很罕见的现象，在肺癌患者中此种现象尚未有报道。