The Evolution of Clinicopathological Diagnostic Features of Upper Tract Urothelial Carcinoma in China: A Summary of 2561 Cases in the Last 20 Years.

In the present study, we found a significant decrease in the incidence of renal pelvic tumors, muscle-invasive and multifocal UTUC in the last 10 years, but the histological grading of the tumors remained unchanged, however, the incidence of the ureter and the size of the renal pelvic tumors showed an increasing trend.

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Unlike the above two researchers, Wu ( 3 ) suggested a decreasing trend in the incidence of UTUC in the United States and a predominance of male patients, renal pelvic tumors, and patients older than 70 years.

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