A 37-year-old man with a history of longstanding ulcerative colitis presents to the ED with a two-day history of constant pleuritic chest pain. This ECG is acquired in the emergency room:

• Sinus rhythm
• Pericarditis

Note the diffuse ST elevation involving leads I, II, AVL, and V1-V6, PR depression in leads I, II, V4-V6, and PR elevation in aVR. There is also isolated T wave inversion in lead III. This is in keeping with pericarditis.