Which term refers to the escape of a fluid into a cavity?

• A. Effusion
• B. Hemangioma
• C. Avulsion
• D. Sepsis

Answer: (A)

The term that refers to the escape of a fluid into a cavity is "effusion." In medical terminology, effusion specifically describes the accumulation of fluid in a particular body cavity, such as the pleural space (pleural effusion), peritoneal cavity (peritoneal effusion), or a joint (joint effusion). This process can occur due to various conditions, including inflammation, infection, or injury, leading to an abnormal buildup of fluid.

Hemangioma refers to a benign tumor made up of blood vessels and is not related to the movement of fluid into a cavity. Avulsion describes the action of forcibly tearing away a part or structure, often in the context of body tissues, and does not pertain to fluid accumulation. Sepsis is a severe medical condition resulting from the body's response to an infection that can lead to systemic inflammation, but it does not concern the specific phenomenon of fluid escaping into a cavity. Therefore, "effusion" is the correct term to describe the process of fluid accumulation in a cavity.