system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 47-year-old man is found to have edema, ascites, and hepatosplenomegaly. The examination of his neck veins reveals elevated venous pressure with a deep y descent. Heart size on x-ray is normal. Which of the following etiologies is not a possible explanation for this syndrome?
assistant
The correct answer is  Commonly, no cause is found for constrictive pericarditis. Some patients do give a history of previous acute pericarditis. TB is now an uncommon cause. Cancer can cause constriction but is uncommon. Rheumatic fever does not cause pericarditis.