[Demonstration of cytoplasmatic immunoglobulins in pleural fluids (author's transl)].

Immunopathological investigations for demonstration of intracytoplasmatic immunoglobulins (zIg) were carried out in 100 pleural fluids of different aetiology. In 1/3 of all fluids gamma-globulin and IgG were found in plasma cells and lymphoblasts (immunocytes). Most often zIg were seen in postpneumonic and tumorous effusions, very sparse in tuberculosis. Among different organ tumors bronchial carcinomas exhibit a high percentage of positive findings.