Pericardial Effusion

**Semantic type:** Disease or Syndrome

**Definition:** Fluid collection within the pericardial sac, usually due to inflammation.

**Synonyms:** - FLUID, PERICARDIAL - Fluid, Pericardial - PERICARDIAL FLUID - PERICARDIAL_EFFUSION - Pericardial Fluid - Pericardial effusion - pericardial effusion