Pseudomediastinal mass as a result of bacterial pericarditis is a
rare clinical presentation. We report one such case in a patient with
end-stage renal disease receiving hemodialysis, who presented primarily
with manifestations of right heart compression due to a large
encapsulated pericardial abscess and, surprisingly, with no overt signs
of sepsis. Surgical drainage, pericardiectomy, and antibiotic therapy
led to a successful outcome.