[Application of tissue engineering technology and stem cells in urethral reconstruction].

Urethral defects caused by congenital abnormality, injury, inflammation or tumor are common diseases in urology. Conventional surgery of urethral reconstruction may lead to many complications, and its application has been greatly limited by insufficient supply of donor materials. Tissue engineering technology and stem cells can be used to construct biological substitutes for maintaining and repairing damaged tissue and organ function, which offers a new prospect for the strategies of urethral reconstruction.