The Role of Radioactive Somatostatin arid Its Analogues in the Control of Tumor Growth -- Treatment of Endocrine Gastroenteropancreatic Tumors with Somatostatin Analogues -- The Significance of Somatostatin Analogues in the Antiproliferative Treatment of Carcinomas -- New Molecular Aspects in the Diagnosis and Therapy Neuroendocrine Tumors of the Gastroenteropancreatic System -- The Role of LH-RH Analogues in the Adjuvant and Palliative Treatment of Breast Cancer -- The Combination of LH-RH Analogues with Other Treatment Modalities in Prostate Cancer -- Primary and Salvage Therapy with LH-RH Analogues in Ovarian Cancer