A 27-year-old woman presented with non-exertional pleuritic chest pain that is relieved with sitting forward. She has no radiographic evidence of a large pericardial effusion and no clinical signs of cardiac tamponade. Regarding the etiology of her pericarditis, she has pancytopenia and an active urinary sediment, which could be caused by infection but may also represent a connective tissue disease such as systemic lupus erythematosus (SLE).
What is the most likely diagnosis? *This case is from the Editorial team of Docplexus and is meant for educative purposes only. (The correct answer is posted in the comment section below)
