What does "Pericardial sac" mean in a report or doctor's letter? In our medical dictionary, you will find a patient-friendly explanation of the meaning of this medical term.
The pericardial sac is a thin, two-layered, fluid-filled pouch that covers the outer surface of the heart. It acts like a protective cover, cushioning the heart and keeping it in place in the chest. It also helps to prevent the heart from over-expanding when blood volume increases. This sac is vital for the proper functioning and protection of the heart.
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