Association of lymphocytic neoplasia and mesothelioma.

Two lymphocytic neoplasms, chronic lymphocytic leukemia and poorly differentiated lymphoma, were detected in two patients who had nonoccupational exposure to asbestos. Both had a pleural mesothelioma subsequent to their initial presentation with lymphocytic neoplasm. Recent reports have suggested a possible association between asbestos exposure and lymphoproliferative neoplasms. Chronic antigenic stimulation by asbestos could predispose one to the immunoproliferative disorders seen in these patients. The possible significance of this relationship is discussed for future consideration.