Incidence of Kidney Stones in the United States: The Continuous National Health and Nutrition Examination Survey.

Purpose: The incidence of kidney stones in the United States is currently unknown. Here, we assessed the incidence of kidney stones using recent, nationally representative data.

Materials And Methods: We used the National Health and Nutrition Examination Survey (NHANES) from 2015 to 2018.

Retrograde chemoinfusion of the upper tract: standardizing the delivery of topical adjuvant therapy.

Upper tract urothelial carcinoma has a high recurrence rate after endoscopic treatment. Immediate postoperative topical chemotherapy may reduce recurrences, as in bladder cancer. A reliable delivery method to the upper tract does not exist.