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.
Figure 1: Note the presence of os trigonum. Figure 2: Note the posterior impingement of os. trigonum during releve. Symptoms: â¢ Pain on the outside of ankle, between Achilles and the lateral ankle bone (lateral malleolus of fibula) â¢ Pain with tendus, releves, and pointe work. â¢ Swelling in ankle and/or foot.