Histological Typing of Oesophageal and Gastric Tumours

This second edition is a collaborative effort of pathologists from eight countries. Significant changes in our understanding of lymphomas, endocrine tumours and the dysplasias have led to modifications in the classification. A bridge between the purely morphological and the immunological classification of lymphomas is given. Considerable attention is given to endocrine tumours, namely carcinoids, and their relevance in diagnostic pathology. New entries discuss fundic gland polyp, endocrine cell hyperplasia and micronest and small cell carcinoma. The classifications of Lauren and Ming gastric carcinomas are also presented.

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This classification is based primarily on the microscopic characteris tics of tumours. It is therefore concemed with the identification of cell types and histological pattems as seen by conventional light mi croscopy. In general, time-honoured terms have been retained. Syn onyms are listed only if they have been widely used, or if they are considered to be important for understanding the disease process. In such cases the preferred term is given first, followed by the synonym in parentheses. The individuality of the tumour manifests itself principally in its histological appearance and the extent of spread at the time of diag nosis. This volume is concemed only with the histological classifica tion of tumours. Anatomieal extent or staging is covered in the TNM 1 Classification. The histological classification of a tumour depends on two main parameters, typing and grading, and a number of additional parame ters which may apply to selected examples.