Trigone of bladder
Trigonum vesicae
- Latin eponym: Trigonum Lieutaudi
- Eponym: Lieutaud's trigone
Definition
Over a small triangular area, termed the trigonum vesicæ, immediately above and behind the internal orifice of the urethra, the mucous membrane is firmly bound to the muscular coat, and is always smooth. The anterior angle of the trigonum vesicæ is formed by the internal orifice of the urethra: its postero-lateral angles by the orifices of the ureters.
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