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Medical oncology is the specialized field of medicine dedicated to the diagnosis, treatment, and management of cancer using systemic therapies such as chemotherapy, targeted therapy, immunotherapy, and hormone therapy. Cancer develops when abnormal cells grow uncontrollably and may spread to other parts of the body through the bloodstream or lymphatic system. Medical oncologists are trained to evaluate different types of cancer, determine the stage and characteristics of the disease, and design personalized treatment plans aimed at controlling or eliminating cancer while preserving overall health.
This specialty plays a central role in cancer care and often works closely with other disciplines such as surgical oncology, radiation oncology, pathology, and diagnostic imaging. Medical oncologists treat a wide range of cancers including breast cancer, lung cancer, colorectal cancer, prostate cancer, blood cancers such as leukemia and lymphoma, and many other solid tumors. Each cancer type may behave differently, and treatment decisions depend on factors such as tumor type, genetic markers, stage of the disease, and the patient’s overall health condition.
Advancements in modern oncology have significantly improved the ability to treat cancer with more precise and effective therapies. Diagnostic techniques such as imaging studies, biopsies, molecular testing, and genetic profiling help doctors understand the biological characteristics of a tumor and select the most appropriate treatment approach. Medical oncology treatments may include traditional chemotherapy, targeted drugs designed to attack specific cancer cells, immunotherapy that helps the immune system recognize and fight cancer, and hormone-based treatments for hormone-sensitive cancers.
Cancer treatment often involves a structured and closely monitored process, including multiple cycles of therapy, supportive care to manage side effects, and long-term follow-up to evaluate treatment response. With ongoing research and advances in personalized medicine, medical oncology continues to evolve, offering improved treatment strategies and better outcomes for many patients. Access to specialized oncology care, advanced therapies, and multidisciplinary expertise plays an important role in supporting patients throughout their cancer treatment journey.
Explore procedures, recovery times, and what to expect from each treatment
Chemotherapy uses anti-cancer drugs to destroy or slow cancer cells throughout the body. It may be used to cure cancer, shrink tumours before surgery, reduce the risk of recurrence after surgery, or control advanced disease. Treatment is given in cycles and is tailored to the cancer type and the individual.
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CAR-T cell therapy is a form of cancer immunotherapy that uses a patient's own T cells, genetically modified in a laboratory to recognise and attack cancer cells. It is used mainly for certain blood cancers that have relapsed or not responded to earlier treatment. The process unfolds over several weeks and requires specialised hospital care.
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Hormone therapy is a long-term treatment for hormone receptor–positive breast cancer. It uses medications such as tamoxifen, aromatase inhibitors, or ovarian suppression to block the estrogen signals that fuel cancer growth and lower the chance of recurrence.
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Cancer immunotherapy is a group of treatments that help the body's own immune system find and attack cancer cells. It includes checkpoint inhibitors, CAR T-cell therapy, monoclonal antibodies, cancer vaccines, and other approaches used across many cancer types. Treatment plans, side effects, and monitoring differ by the type of immunotherapy used.
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Targeted therapy for cancer uses drugs designed to block the specific molecules and pathways that drive a particular tumour’s growth. It is guided by biomarker testing of the cancer and is used across many tumour types, often alongside surgery, chemotherapy, immunotherapy, or radiation.
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Hormone therapy for gynecologic cancers uses medications to block or lower the hormones that fuel certain endometrial and ovarian cancers. It is given as tablets or injections, often over months or years, and is one of several treatment options doctors may consider depending on tumour type and hormone receptor status.
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Hormone therapy for prostate cancer, also called androgen deprivation therapy (ADT), lowers or blocks testosterone to slow cancer growth. It is used at several stages of disease, alone or with radiation, surgery, or other drugs, and is usually given as injections, implants, or tablets over months to years.
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