The abbreviation CA is commonly used to refer to which condition?

• A. Cardiovascular Anomaly
• B. Calcium Absorption
• C. Cancer
• D. Congenital Anomaly

Answer: (C)

In medical shorthand, CA most commonly stands for cancer. This abbreviation pops up routinely in charts, notes, and discussions about oncology, where you might see statements like “CA history” or references to cancer-related markers such as CA-125. While calcium is a real contender for the letters CA, in practice calcium is usually written as Ca and presented with a numerical lab value rather than a stand-alone CA. Congenital or cardiovascular anomalies exist, but CA is not the standard shorthand for those conditions in everyday medical documentation. So, when you see CA without additional context, the default, most common meaning is cancer.