CEA test: Carcinoembryonic antigen test is to detect response to therapy in cancer patients, especially colon cancer, with normal range of less than 2.5 (less than 5 in heavy smokers). Note that a positive test may not always be indicative of cancer.
Os Trigonum Syndrome. An Os Trigonum is a small, extra bone found at the back of the ankle in approximately 5-10% of people. Often it goes completely unnoticed, not causing any problems.
A triangular smooth area at the base of the bladder between the openings of the two ureters and that of the urethra. Synonym(s): trigonum vesicae [TA] , vesical triangle.n. A smooth triangular area at the base of the bladder between the openings of the two ureters and the opening of the urethra. Also called trigone of bladder. triangular smooth area at the base of the bladder between the openings of the two ureters and that of the urethra. Synonym(s): trigonum vesicae [TA] , vesical triangle.