The FLOW Registry.

The purpose of this study is to create a database and prospective registry for data collection on patients with benign prostatic hyperplasia undergoing Aquablation of the prostate. All patients undergoing Aquablation of the prostate will be enrolled in the registry. Historical data from 1/1/2024- 11/30/2025 will be added through chart review. Current and future patient data will be collected through chart review during the subject's clinical care. Only data available in the electronic medical record will be collected and no additional data will be collected for research purposes. No biospecimens will be collected, and there are no physical risks from study participation.

Inclusion Criteria: * Male sex * ≥18 years of age * Diagnosis of benign prostatic hyperplasia * Scheduled to undergo or have already undergone Aquablation as part of routine clinical care or any ongoing clinical trials * Aquablation performed with ultrasound guided, robotic assisted waterjet. Newer methods and instrumentation continue to be developed to ablate tissue, and these energy sources can be entered into the registry as clinical use begins. Exclusion Criteria: * Under 18 Years of age.