A 38-year-old patient visited BR Life SSNMC hospital with complaints of pain in left side chest and double vision. During the process of understanding his case history, the patient revealed that he is a chain smoker and has been feeling bouts of chest pain since few months. Initially, he had consulted a doctor elsewhere for chest pain & was asked to undergo ECG and ECHO and had ruled out cardiac problems. He was treated for gastric issues. Post his treatment, after 8 months, the patient complained about repeated chest pain and double vision. He met Dr. Rajashekhar C Jaka, Surgical Oncologist at BR Life SSNMC Hospital. To understand and evaluate his condition better, Dr. Jaka asked him to undergo MRI brain scan. The scan results revealed a tumor in his brain and further tests showed lung cancer. Since lung cancer was not treated at the right time, it had spread to his brain. As an immediate action, Dr. Jaka started radiotherapy and other treatment which helped in the control of the growth of tumor. In this case his continuous smoking habit led to lung cancer and the delay in diagnosis had resulted in spreading of the tumor to other parts of the body.