This text is the definitive benchside reference on the diagnosis of tumours and tumour-like lesions of the lymphoid system. Written for the pathologist in practice and in training this is the only book to provide comprehensive coverage of both the lymph nodes and extranodal sites (gastrointestinal tract, skin, lung, thymus, spleen) within the same volume. It is also the only book to fully integrate both neoplastic and non-neoplastic disorders within the same volume. The book explains the methods and techniques of diagnosis (including the latest modalities in immunohistochemistry and molecular genetics) routinely used in the daily practice of modern clinical pathology. There is a practical emphasis throughout on differential diagnosis, on the clinical behaviour of the disease entity and on prognosis. Chapters consist of the same format: introduction: incidence etc clinical presentation microscopic appearances (if relevant) histology immunochemistry molecular genetics normal cell counterpart (if applicable) differential diagnosis clinical behaviour and outcome.