Foreword: Melmed, S.; Preface: Kontogeorgos, G.; Kovacs, K.; Molecular Basis of Pituitary Development and Cytogenesis: Asa, S.L; Ezzat, S.; Molecular Pathology of the Pituitary. Development and Functional Differentation of Pituitary Adenomas: Osamura, R.Y.; Egashira, N.; Miyai, S.; Yamazaki, M.; Takekoshi, S.; Sanno, N.; Teramoto, A.; Cell Cycle Dysregulation in Pituitary Oncogenesis: Musat, M.; Vax, V.V.; Borboli, N.; Gueorguiev, M.; Bonner, S.; Korbonits, M.; Grossman, A.B.; Role of Regulatory Factors in Pituitary Tumour Formation: Korbonits, M.; Morris, D. G.; Nanzer, A.; Kola, B.; Grossman, A.B.; Growth Factors and Cytokines: Function and Molecular Regulation in Pituitary Adenomas: Renner, U.; Paez-Pereda, M.; Arzt, E.; Stalla, G.K.; Proliferation Markers and Cell Cycle Inhibitors in Pituitary Adenomas: Saeger, W.; Down-Regulation of E-Cadherin and Catenins in Human Pituitary Growth Hormone-Producing Adenomas: Sano, T.; Rong, O.Z.; Kagawa, N.; Yamada, S.; Morphologic Changes and Molecular Regulation of Angiogenesis in Pituitary Adenomas: de la Torre, N.G.; Wass, J.A.H.; Turner, H.E.; Advances in Pituitary Pathology: Use of Novel Techniques: Lloyd, R.V.; Pituitary Tumor Transforming Gene: An Update: Yu, R.; Melmed, S.; Pituitary Tumour Clonality Revisited: Clayton, R.N.; Farrell, W.E.; Molecular Cytogenetics of Pituitary Adenomas. Assessed by FISH Technique: Kontogeorgos, G.; Morphology, Molecular Regulation and Significance of Apoptosis in Pituitary Adenomas: Kapranos, N.; Kontogeorgos, G.; Horvath, E.; Kovacs, K.; Somatostatin Receptors in Pituitary Function, Diagnosis and Therapy: Hofland, L.J.; Lamberts, S.W.J.; Pathology and Molecular Genetics of the Pituitary Gland in Patients with the 'Complex of Spotty Skin Pigmentation, Myxomas, Endocrine Overactivity and Schwannomas' (Camey Complex): Stratakls, C.A.; Matyakhina, L.; Courkouteakis, N.; Patronas, N.; Voutetakis, A.; Stergiopoulos, S.; Bossis, I.; Carney, J.A.; Recent Advances in MEN1 Gene Study for Pituitary Tumor Pathogenesis: Kameya, T.; Tsukada, T.; Yamaguchi, K.; Author Index; Subject Index