Effusive-Constrictive Pericarditis Associated With Parvovirus B19 Infection.

Parvovirus B19, pathogen of children's fifths disease, is among the causes of viral/idiopathic pericarditis. This paper presents 3 adult cases of complicated effusive-constrictive parvovirus B19 pericarditis presenting with overt diastolic heart failure during an outbreak in September to October 2023. Comprehensive transthoracic echocardiography and cardiac magnetic resonance played a key role in noninvasive assessment of constrictive physiology and pericardial inflammation, guiding successful treatment with low-dose prednisolone, having failed standard colchicine and nonsteroidal anti-inflammatory drugs.