Each volume in this richly illustrated series, sponsored by the Papanicolaou Society of Cytopathology, provides an organ-based approach to the cytological and histological diagnosis of small tissue samples. Benign, reactive and malignant entities are presented in a well-organized and standardized format, with high-resolution color photomicrographs, tables, tabulated specific morphologic criteria and ancillary testing algorithms. Example vignettes allow the reader to assimilate the diagnostic principles in a case-based format. This volume provides a comprehensive review of effusion pathology, with extensive color illustrations. Throughout the text cytologic findings are correlated with cell blocks and surgical pathology follow-up. Dedicated chapters provide an update of the biology, immunocytochemistry and molecular diagnostic features utilized in the multimodal approach to serosal pathology, and the utility of core biopsies as a complement to the diagnostic approach. With a CD-ROM offering all images in a downloadable format, this is an important resource for all practising and trainee pathologists.