The textbook "Molecular Mechanisms of Cancer" offers a comprehensive analysis of the molecular and cellular mechanisms that lead to the onset and development of cancer. It highlights the complex biological processes underlying the malignant transformation of cells and discusses the role of oncogenes and tumor suppressor genes in cancer development. The book goes beyond traditional concepts and examines the diverse clinical presentations of cancer, contributing to a deeper understanding of the pathology and pathophysiology of tumors. With an interdisciplinary approach, it presents the latest advancements in cancer research that help unravel the mechanisms of growth, senescence, and metastasis. This work is a valuable resource for professionals and students engaged in the biological foundations of cancer.