Upper tract urothelial carcinoma: epidemiology, presentation, and high-risk endemic populations.

Abstract

Upper tract urothelial carcinoma (UTUC) only accounts for 5-10% of all urothelial cancers but these patients present with high stage disease and 2 out of 3 patients have evidence of muscle-invasion at time of diagnosis. Furthermore, 10% of UTUC patients have associated Lynch syndrome and therefore diagnosis of UTUC should prompt timely evaluation and familial counseling. The purpose of this review is to outline the current evidence on the epidemiology, presentation, and high-risk endemic populations of UTUC through review of contemporary publications occurring over the preceding 18 months. Both the American Urological Association (AUA) and European Association of Urology (EAU) have published updated guidelines within the last 18 months for the management of UTUC. Of note, the updated guidelines give special consideration to identifying patients with risk factors for Lynch syndrome and recommend universal histologic testing for those with high probability of having Lynch syndrome cancers as well as referral for genetic counseling and germline testing. UTUC is an overall rare malignancy but tends to present with advanced stage and muscle-invasion. A proper understanding of the epidemiology, presentation, and high-risk endemic populations is necessary to develop preventive and interventional strategies.