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   1.The symbol for calcium. 2. Short (and slang) for cancer and carcinoma. 3. Abbreviation for cardiac arrest; chronological age; coronary artery. 4. Abbreviation for circa, meaning about or approximately, as in ca. 1 mg.


Chemical element needed for healthy teeth, bones and nerves

Any malignant growth or tumor caused by abnormal and uncontrolled cell division; it may spread to other parts of the body through the lymphatic system or the blood stream.

Cancer that begins in the tissues that line or cover an organ.

Pertaining to the heart.

A blood vessel that carries blood from the heart to the body.



C3 (cervical vertebra)
The third cervical (neck) vertebra from the top.

C4 (cervical vertebra)
The fourth cervical (neck) vertebra from the top.

C5 (cervical vertebra)
The fifth cervical (neck) vertebra from the top.

C6 (cervical vertebra)
The sixth cervical (neck) vertebra from the top. The next-to-last of the seven cervical vertebrae.

C7 (cervical vertebra)
C7 is the symbol for the 7th cervical (neck) vertebral bone (C7) which is sometimes called the prominent vertebra due to the length of its spinous process (the projection off the back of the vertebral body).


CA 125
A cancer marker, a protein normally made by certain cells in the body including those of the uterine tubes, uterus, cervix, and the lining of the chest and abdominal cavities (the peritoneum and pleura). CA 125 stands for cancer antigen 125.

CA 15-3

CA 19-9

CA 27-29

Coronary artery bypass graft; and Coronary artery bypass grafting.

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