Evaluation of effusions from the serous membranes / Carlos W.M. Bedrossian -- Mesothelial response to injury / Aziza Nassar and Claire W. Michael -- Benign conditions / Xin Jing and Claire W. Michael -- The cytological diagnosis of malignant mesothelioma / Carlos W.M. Bedrossian and Jeffrey T. Jhee -- Common metastatic epithelial neoplasms / Michael H. Roh and Claire W. Michael -- Uncommon metastatic epithelial neoplasms / Stewart M. Knoepp and Claire W. Michael -- Rare metastatic tumors of non-epithelial origin / Qing Kay Li and David C. Chhieng -- Primary and metastatic hematopoietic diseases / Adebowale J. Adeniran and David C. Chhieng -- Diagnostic biomarkers in the work-up of effusions with emphasis on mesothelioma / Filip Mundt, Katalin Dobra, and Anders Hjerpe -- Immunocytochemical studies in effusions / Guoping Cai and David C. Chhieng -- Malignant effusion of unknown primary / Sarah M. Bean, Berrin Ustun, and David C. Chhieng -- Molecular studies in effusions / Fernando Schmitt and Adhemar Longatto-Filho -- Evaluation of pleural biopsy / David C. Chhieng and Claire W. Michael.