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Written By THT Editorial Team

Dr. Asmita Pandey

Reviewed by Dr. Erena Pradhan, Consultant Urologist, MS, MCH


Benign Prostatic Enlargement (BPE) is a prevalent condition in men, characterized by bothersome urinary symptoms such as increased frequency, urgency, weak urine flow, and incomplete bladder emptying. While lifestyle modifications, dietary adjustments, and medication can help manage mild cases, individuals with more severe symptoms may find relief through surgical intervention. Among the traditional surgical options, transurethral resection of the prostate (TURP) is commonly employed, albeit with its associated risks, including bleeding, sexual dysfunction, and a prolonged recovery period [1].

A Less Invasive Option:

The Rezum System emerges as a promising alternative to conventional surgical methods. This innovative approach utilizes the application of thermal energy, in the form of steam, to target and treat the enlarged prostate tissue [2][3]. By delivering controlled bursts of steam directly to the prostate gland, Rezum therapy offers a minimally invasive solution that effectively alleviates urinary symptoms while mitigating the risks commonly associated with TURP, such as bleeding, ejaculatory dysfunction, and retrograde ejaculation [4]

How Rezum Works:

At the heart of the Rezum System lies a specialized device equipped with a small, flexible needle-like instrument. This instrument is inserted into the prostate tissue under direct visualization, allowing for precise delivery of thermal energy in the form of steam. The targeted application of steam induces localized tissue necrosis, leading to the gradual shrinkage of the enlarged prostate over time. Importantly, this targeted approach ensures the preservation of surrounding healthy tissue and structures, minimizing the risk of adverse effects commonly observed with conventional surgical methods [5].

What to Expect after Treatment:

 Patients undergoing Rezum therapy can anticipate a significant improvement in urinary symptoms, resulting in enhanced quality of life and restored urinary function. Clinical studies have demonstrated notable enhancements in urinary flow rates, reduction in post-void residual urine volume, and improvements in symptom scores following Rezum therapy. While some individuals may experience transient side effects such as temporary dysuria, urinary frequency, or urgency immediately post-treatment, these symptoms typically resolve within a few weeks and are generally milder compared to those observed following traditional surgical interventions [4].


Rezum therapy represents a paradigm shift in the management of benign prostatic enlargement, offering a patient-centered, minimally invasive solution that effectively addresses bothersome urinary symptoms while minimizing the associated risks. By harnessing the therapeutic potential of steam, Rezum therapy exemplifies the advancements in medical technology and underscores the importance of individualized care in the field of urology [5][6].


  1. Lee CL, Kuo HC. Pathophysiology of benign prostate enlargement and lower urinary tract symptoms: Current concepts. Ci Ji Yi Xue Za Zhi. 2017 Apr-Jun;29(2):79-83. doi: 10.4103/tcmj.tcmj_20_17. PMID: 28757771; PMCID: PMC5509197.
  2. McVary, K. T., Roehrborn, C. G., & Barkin, J. (2019). Rezūm Water Vapor Thermal Therapy for Lower Urinary Tract Symptoms Associated with Benign Prostatic Hyperplasia: 4-Year Results from Randomized Controlled Study. Urology, 126, 171-179.
  3. McVary, K. T., Gange, S. N., Gittelman, M. C., Goldberg, K. A., Patel, K., Shore, N. D., … & Roehrborn, C. G. (2016). Erectile and ejaculatory function preserved with convective water vapor energy treatment of lower urinary tract symptoms secondary to benign prostatic hyperplasia: randomized controlled study. Journal of Sexual Medicine, 13(6), 924-933.
  4. McVary, K. T., Rogers, T., & Roehrborn, C. G. (2016). Rezūm water vapor thermal therapy: practical guide for urologists and primary care physicians treating lower urinary tract symptoms secondary to benign prostatic hyperplasia. Therapeutic Advances in Urology, 8(3), 172-181.
  5. Dixon, C.M., Cedano, E., & Mynderse, L. A. (2018). Rezūm water vapor thermal therapy for the treatment of lower urinary tract symptoms associated with benign prostatic hyperplasia: A systematic review of the literature. Current Urology Reports, 19(6), 44.
  6. Roehrborn, C.G., Gange S.N., Shore N.D., et al.(2020). Five year results of the prospective randomized controlled Rezūm system study: Convective radiofrequency thermal therapy for treatment of lower urinary tract symptoms due to benign prostatic hyperplasia.Journal of Urology ,203(5),1042-1050.