PLEURITIS IN SYSTEMIC LUPUS ERYTHEMATOSUS: ITS IMPORTANCE AS AN EARLY MANI- FESTATION IN DIAGNOSIS *

ALTHOUGH pleuritis and pleural effusion have long been considered as cardinal signs in the clinical picture of systemic lupus erythematosus (S. L. E. J) , these have usually been regarded as late manifestations of the disease. The feeling also prevails that unexplained pleuritis is to be re