The approach described in this book is different from that in most student texts, and has been very successful in practice, starting almost from scratch, but omitting many of the ‘basics’ such as the details of hematopoiesis, laboratory technology, and so on, which are hardly relevant to the practising clinician and student in the wards, and are primarily of interest to the hematologist and sometimes to the clinical specialist. Considerable emphasis is given to the clinical history and examination, and the interpretation of the clinical patterns thus exposed. Hopefully it will overcome many of the traditional problems experienced in practical diagnostic haematology.