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.
MVS, OS/390, z/OS operating system. MVS (Multiple Virtual Storage) is the operating system which is developed by IBM in the sixties and supports POSIX. MVS was developed further from MVT operating system and extended by many functions like the use of virtual memory. It is used in IBM mainframes like the system /370 and system /390, needs low hardware requirements and convinces by a high stability in long-term operating mode.