Unraveling the Complexity of Immune System & Tumor Cells; A Narrative Overview

Introduction- Undergoing drastic metabolic and behavioral transformations, carcinogenesis is a cumulative process which leads to excessive proliferation in an unusual manner, camouflage to escape surveillance by the immune system. Aim-The aim of this review is to provide an in-depth exploration of immunology of cancer, highlighting the mechanisms and various aspects immune system, how it interacts with cancer cells and the challenges coming in its way due to tumor cell immune evasion. Method-A comprehensive literature survey and search was made across major electronic databases, which include PubMed, Scopus, and Web of Science, covering publications up to June 2025. The search strategy employed combinations of keywords and medical terms relevant to tumors. Conclusion-Representing one of the most significant advances in the field of oncology the evolving field of cancer immunotherapy offers promising treatment options thereby harnessing the body’s immune system to target cancer cells. Justification-it is not our intention to revisit many of the issues relating to tumor immunology, which have already been covered in detail previously in the literature. Rather this article focuses on the aspects that by compiling desperate foundational knowledge and parallel newer advances in this rapidly evolving field, the review offers a holistic framework of worth to our researchers, clinicians, and students working in the area of cancer immunology and oncology.