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Objectives  To describe the feasibility of a novel cell‐based endoscopic technique using buccal epithelium, expanded and encapsulated in a thermoreversible gelation polymer scaffold for the treatment of urethral stricture.    Methods  Six male patients with bulbar urethral stricture ranging from 2.0 to 3.5 cm in length were included in this pilot study. Autologous buccal epithelial cells from a small buccal mucosal biopsy were isolated, cultured and encapsulated in thermoreversible gelation polymer scaffold, and were implanted at the stricture site after a wide endoscopic urethrotomy.    Results  All the patients voided well, with a mean peak flow rate of 24 mL/s. Urethroscopy carried out at 6 months showed healthy mucosa at the urethrotomy site. However, two of the six patients had recurrence at 18 and 24 months, respectively.    Conclusions  This endoscopic‐based Buccal epithelium Expanded and Encapsulated in Scaffold‐Hybrid Approach to Urethral Stricture (BEES‐HAUS) technique is a promising alternative for the open substitution buccal graft urethroplasty. It is possible to achieve the benefits of open substitution buccal urethroplasty with this endoscopic technique.

international journal of urology

Buccal epithelium Expanded and Encapsulated in Scaffold‐Hybrid Approach to Urethral Stricture (BEES‐HAUS) procedure: A novel cell therapy‐based pilot study