ABSTRACT
Pleural effusions can be present in nearly all hematological diseases at presentation or during the clinical course of the disease. The disease itself, drug toxicity, radiotherapy underlying infections, secondary malignancies, autoimmune phenomena, extramedullary hemopoiesis, and other complications may contribute to effusion development (1-71). Non-Hodgkin’s lymphomas most commonly are complicated with effusions, especially when mediastinal involvement is present (1,2,65,70,72). The second most common condition is bone marrow transplantation, while pleural effusions rarely accompany the remaining hematological diseases (73).
