What would be your approach to a patient with new diagnosis of seropositive rheumatoid arthritis manifesting as a constrictive pericarditis with no joint pain complaints?   

This is an interesting clinical scenario. It highlights some of the current issues we face as rheumatologists, namely an atypical presentation of one of our more common diseases. This patient is labeled as having seropositive rheumatoid arthritis yet lacks arthritis features. I suspect the diagnosis...