Pericarditis caused by toxoplasma infection is exceptional: 16 cases only have been published since 1943. The authors report a case of Hodgkin's disease associated with, and revealed by, toxoplasmic pleuro-pericarditis, and they review the literature on this complication of toxoplasmosis. Since the infection can be cured and since pericarditis may become chronic and constrictive if untreated, toxoplasmosis should be envisaged and confirmed or infirmed by serological tests in all patients presenting with pericarditis of uncertain origin. Provided it has not reached the chronic stage, toxoplasmic pericarditis responds well to the conventional treatment with pyrimethamine and sulfonamides.