The third edition remains connected to the previous editions in being concise, well-illustrated, and conceptual. In the third edition, recent advances have been incorporated wherever required. This edition uses the classification, nomenclature, and diagnostic approach to malignant hematologic diseases as per the recent updated and revised world health organization classification of tumors of Hematopoietic and Lymphoid tissues published in 2017. The scope of the book encompasses students of MBBS, postgraduates in Pathology and medicine, and students of medical laboratory technology.