Methods in Cellular and Molecular Pathology Paul Komminoth, M.D., Axel Walch, M.D, Martin Werner, M.D., Aurel A. Perren, M.D. Institute of Pathology, Stadtspital Triemli Zurich, Switzerland Hypothalamus and Neurohypophysis Kazuhiro Takahashi, M.D., Ph.D., Osamu Murakami, M.D., Ph.D., Toraichi Mouri, M.D., Ph.D. Tohoku University School of Medicine, Sendai Miyagi, Japan Tumors of the Adenohypophysis Fateme Salehi, BSC, Sergio Vidal, Ph.D., Eva Horvath, Ph.D., Kalaman Kovacs, M.D., Ph.D., Bernd W. Scheithauer, M.D. Department of Pathology, St. Michael's Hospital University of Toronto, Toronto, Canada Recent Developments In Molecular Embryogenesis and Molecular Biology of the Pituitary Robert Y. Osamura, M.D., Ph.D., Noboru Egashira, M.D. Tokai University School of Medicine, Kanagawa, Japan 5. Recent Developments in Molecular Biology of Pituitary Tumors Ricardo V. Lloyd, M.D., Ph.D. Department of Pathology, Mayo Clinic, Rochester, MN The Pineal Gland Katherine M. Lindstrom, M.D., M. Beatriz S. Lopes, M.D. Neuropathology, University of Virginia Health Science Center, Charlottesville, VA The Parathyroid H. Ruben Harach, M.D., FRCPath Pathology Service, A. Onativa, M.D., Endocrinology and Metabolism Hospital Salta, Argentina Recent Developments in Molecular Biology of the Parathyroid Vania Nose, M.D., Ph.D., Ashraf Khan, M.D., FRCPath Department of Pathology, Brigham and Women's Hospital, Boston, MA Pathology of the Thyroid Gland Ashraf Khan, M.D., FRCPath, Vania Nose, M.D., Ph.D. Department of Pathology, University of Massachusetts Medical Center, Worcester, MA RecentDevelopments in the Molecular Biology of the Thyroid Yuri E. Nikiforov, M.D., Ph.D. Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA Adrenal Cortex Hironobu Sasano, M.D., Ph.D., Yasuhiro Nakamura, M.D., Ph.D., Takuya Moriya, M.D., Ph.D., Takashi Suzuki, M.D., Ph.D. Department of Pathology, Tohoku University School of Medicine, Sendai, Japan Adrenal Medulla and Paraganglia Anne Marie McNicol, M.D., Ph.D. University of Queensland The Royal Brisbane and Women's Hospital Heston 4029, Brisbane, Australia Molecular Biology of Pheochromocytomas and Paragangliomas Elizabeth E. King, M.D., Patricia L.M. Dahia, M.D., Ph.D. Department of Medicine and Cellular and Structural Biology University of Texas Health Science Center San Antonio, Texas Endocrine Ovaries Xavier Matias-Guiu, M.D., Ph.D. Department of Pathology, Hospital Universitari Arnau de Vilanova, Universitat de Lleida Barcelona, Spain Endocrine Testis Robert E. Emerson, M.D., Liang Cheng, M.D., Thomas M. Ulbright, M.D. Department of Pathology, Indiana University School of Medicine, Indianapolis, IN Endocrine Tumors of the Gastrointestinal System Guido Rindi, M.D., Ph.D., Silvia Pizzi, M.D., Tiziana D'Adda, M.D., Cesare Bordi, M.D. Section of Anatomic Pathology, Department of Pathology and Laboratory Medicine University of Parma, Parma, Italy 17. The Endocrine Pancreas Stefano La Rosa, M.D., Daniela Furlan, BscD, Fausto Sessa, M.D., Carlo Capella, M.D. Servizio di Anatomia Patologica, Universita dell Insubria e Ospedale di Circolo, Varese, Italy 18. Neuroendocrine Differentiation Patterns in Various