This new edition differs from the preceding ones in that there has been extensive revision of most chapters. Recent advances in research gained by immunohistochemical, molecular biological, and cytogenetic methods are included, as far as they are applicable for daily diagnostic work. The chapter on neoplasms, in particular, has been greatly expanded in accordance with the new WHO International Histological Classification of genital tract tumors, covering all pertinent differential diagnostic aspects. The chapter on malignant lymphomas and hematopoetic neoplasms involving the endometrium is a new contribution to this edition (F. D. , Ulm). We have revised the chapter on gestational diseases, incorpor- ing recent advances in the differential diagnosis of gestational trophoblastic tumors. New discoveries and experiences in correlating structure and function in infertility and in h- mone replacement therapy of peri- and postmenopausal patients are also included. Many new microphotographs have been added to illustrate the advances in tumor research and in immunohistochemical detection methods. We have updated the list of references including recent relevant publications. To the correspondents and consultants who have contributed valuable observations and suggestions, bringing thereby to our attention omissions in the second edition, we acknowledge our cordial thanks. We thank Dr. Wolfram Klapper, Director of the L- phom Register of the University of Kiel, for case material for making the micropho- graphic illustrations of lymphomas. The staff of Springer-Verlag has earned our gratitude for their skill in preparing this new edition.

"The prime purpose of this atlas is to help the pathologist find, classify and differentially diagnose the changes he is observing.
Information on the daily changes during the menstrual cycle and how to date them is essential for recognizing changes caused by abnormal endogenic and iatrogenic hormonal stimuli in functional endometrial disturbances. To provide their patients with the proper hormonal therapy, gynecologists cannot rely on blood samples only because of the constantly fluctuating hormonal levels. A precise functional diagnosis of the endometrial biopsy is the most accurate and best means for assessing hormonal action. Numerous microphotographs explain in detail how to recognize the normal and pathological changes that can develop in the endometrium. The subject of endometritis and the complex endometrial neoplasms and their precursors, with their differential diagnosis as well as their clinical prognosis are covered in detail. To complete the endometrial histopathology, gestational changes are reviewed and illustrated in the last chapter."

to the First Edition.- Technical Remarks.- Normal Endometrium.- Metaplastic Changes.- Circulatory Disturbances.- Functional Disturbances.- Iatrogenic Changes.- Endometritis.- Neoplasms.- Gestational Changes.