Holmium Laser Enucleation of the Prostate (HoLEP) has revolutionized the surgical management of benign prostatic hyperplasia, establishing itself as the modern gold standard for anatomic endoscopic enucleation. It is a size-independent procedure that offers the durability of open simple prostatectomy with the minimally invasive advantages of a transurethral approach. This chapter will provide a comprehensive overview of the HoLEP procedure, from its fundamental principles to its advanced surgical techniques and outstanding clinical outcomes.
Holmium Laser Enucleation of the Prostate (HoLEP)
HoLEP utilizes the unique properties of the holmium:YAG laser, which has a shallow tissue penetration depth and excellent hemostatic capabilities, to anatomically dissect the prostatic adenoma from the surgical capsule. The enucleated tissue is then removed from the bladder using a morcellator.
Surgical Techniques of HoLEP
Several techniques for HoLEP have been described, all sharing the common principle of anatomical enucleation. The choice of technique often depends on surgeon preference and experience.
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Three-Lobe Technique (Gilling's Technique): This is the classic approach, involving the sequential enucleation of the median lobe and the two lateral lobes. The procedure begins with incisions at the 5 and 7 o'clock positions to release the median lobe, which is then dissected from the underlying capsule and pushed into the bladder. Subsequently, an incision is made at the 12 o'clock position, and the lateral lobes are enucleated from the capsule in a retrograde fashion.
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En Bloc Techniques: To improve efficiency and potentially reduce the learning curve, several "en bloc" techniques have been developed. These methods aim to enucleate the entire adenoma as a single piece or in large fragments. Examples include the Turin group's technique, which uses inverted U-shaped incisions, and the Seoul National University's modification with an early inverted V-shaped apical mucosal incision. These techniques are designed to better maintain the surgical plane and preserve the urethral sphincter.
Outcomes and Complications of HoLEP
HoLEP has demonstrated excellent long-term efficacy, with durable improvements in symptoms and flow rates, and a very low reoperation rate (less than 5% at 10 years). It is effective for prostates of all sizes. The most common complication is retrograde ejaculation, which occurs in the majority of patients. Transient urinary incontinence can occur, but the rate of long-term stress urinary incontinence is low (1-2%). Other potential complications include bladder neck contracture and urethral stricture.