MSFinals-0342
A 56-year-old man presents with non-specific chest pain lasting 6 hours. His ECG shows no significant changes, and cardiac enzymes are normal. As the pain becomes sharper and localizes to the left side of his chest over the next 48 hours, he reports that it worsens when lying down and taking deep breaths. The diagnosis is pericarditis.
What can be said about the pericardium in this case?