This concise and practical atlas is a guide to the often challenging pathological interpretation of needle core biopsies, with a focus on the differential diagnosis of benign and malignant conditions in lymph node core biopsies. A wide range of pathological changes is covered, along with diagnostic problems and pitfalls. Conditions include: specific reactive conditions such as Kikuchi lymphadenitis and Castleman disease, non-specific reactive lymphadenopathy, malignant lymphomas commonly encountered in needle core biopsies and non-lymphoid and metastatic disease. Detailed photomicrographs are used to illustrate each condition, covering both histological appearances and immunohistochemical findings. An illustrative case is included in most sections and additional images can be found on the accompanying DVD-ROM. This atlas is an essential reference for consultants and specialist medical trainees in the fields of haematopathology, pathology and haematology.