[Classification of pleurisy].

A draft scheme for classification of pleurisy is described. It includes (1) pleurisy form, (2) qualitative characteristics of pleural exudate, (3) pleurisy topography, (4) etiology, (5) clinical characteristics of the pleurisy process, (6) residual postpleuritic lesions and (7) functional disorders in the lungs and heart. Brief comments on the classification system are presented.