27th July 2020

The following patient has presented with central chest pain which is worse on lying flat, and a diagnosis of pericardial effusion has been made

A 17-year-old patient with no significant medical history who has recently been off school with a sore throat, fever and anorexia. He has recently developed chest pain worse on inspiration and lying flat. On examination he has cervical lymphadenopathy, palatal petechiae and splenomegaly. An echo shows the presence of a pericardial effusion. 

For the patient above, please select the SINGLE most likely cause of the pericardial effusion. Select ONE option from the list above.