Cancer Treatment Types, Options, and Research Updates
Author: Disabled World (DW)
Updated/Revised Date: 2 Nov 2026
Table of Contents:
Synopsis - Definition - About This Section - FAQs - Publications - Subtopics
Synopsis
Learn how cancer treatment works, including surgery, chemotherapy, radiation, immunotherapy, hormonal, and targeted therapy, plus the latest research news.
At a Glance
- 1 - Angiogenesis inhibitors such as bevacizumab block the blood vessel growth tumors need to survive.
- 2 - Removing or blocking estrogen or testosterone can help treat hormone-sensitive breast and prostate cancers.
- 3 - Experimental blood tests, such as the lymphocyte genome sensitivity (LGS) test, aim to detect some cancers earlier.
- 4 - Palliative care is a multidisciplinary specialty that manages pain, nausea, and other cancer symptoms to protect quality of life.
Topic Definition
- Cancer Treatment
Cancer treatment is the medical management of malignant tumors through one or more approaches selected to control or remove abnormal cell growth while limiting harm to healthy tissue. Because cancer describes a large group of related diseases rather than a single condition, care is tailored to the tumor's location, grade, and stage, along with the patient's overall health. Common methods include surgery, chemotherapy, radiation therapy, hormonal therapy, and targeted therapy such as immunotherapy, and these are often combined for greater effect. The overall aim is to eliminate the disease completely where possible, and when a cure is unlikely, to relieve symptoms and preserve a good quality of life for as long as possible.
Overview
Cancer can be treated by surgery, chemotherapy, radiation therapy, hormonal therapy, and targeted therapy (including immunotherapy such as monoclonal antibody therapy). The choice of therapy depends upon the location and grade of the tumor and the stage of the disease, as well as the general state of the patient (performance status). A number of experimental cancer treatments are also under development.
Complete removal of the cancer without damage to the rest of the body is the goal of treatment. Occasionally, this can be accomplished by surgery, but the propensity of cancers to invade adjacent tissue or to spread to distant sites by microscopic metastasis often limits its effectiveness. The effectiveness of chemotherapy is typically limited by toxicity to other tissues in the body. Radiation can also cause damage to normal tissue.
Defining Some Cancer Terms:
- Chemotherapy - The use of medicines or drugs to treat cancer.
- Surgery - Used to diagnose, treat, or even help prevent cancer in some cases.
- Immunotherapy - Treatment that uses your body's own immune system to help fight cancer.
- Radiation therapy - Uses high-energy particles or waves to destroy or damage cancer cells.
- Hormonal therapy - The growth of some cancers can be inhibited by providing or blocking certain hormones.
- Photodynamic therapy - PDT is a treatment that uses special drugs, called photosensitizing agents, along with light to kill cancer cells.
- Targeted therapy - A newer type of cancer treatment that uses drugs or other substances to more precisely identify and attack cancer cells, usually while doing little damage to normal cells.
- Angiogenesis inhibitors - Prevent the extensive growth of blood vessels (angiogenesis) that tumors require to survive. Some, such as bevacizumab, have been approved and are in clinical use.
- Clinical trials - Research studies that involve people. They are the final step in a long process that begins with research in a lab. Most treatments we use today are the results of past clinical trials.
Cancer Immunotherapy refers to a diverse set of therapeutic strategies designed to induce the patient's own immune system to fight the tumor. Immune checkpoint inhibitors, such as ipilimumab, nivolumab and pembrolizumab, release the brakes on the immune system and are now standard treatment for many cancers, including melanoma, lung, kidney, bladder, and head and neck cancers. CAR T-cell therapy, first approved in 2017, genetically changes a patient's own T cells to attack some leukemias, lymphomas and multiple myeloma. Older methods include intravesical BCG immunotherapy for early bladder cancer, and interferons and other cytokines.
Targeted therapy, which first became available in the late 1990s, has had a significant impact in the treatment of some types of cancer, and is currently a very active research area. This constitutes the use of agents specific for the deregulated proteins of cancer cells. Small molecule targeted therapy drugs are generally inhibitors of enzymatic domains on mutated, over-expressed, or otherwise critical proteins within the cancer cell.
The growth of some cancers can be inhibited by providing or blocking certain hormones. Common examples of hormone-sensitive tumors include certain types of breast and prostate cancers. Removing or blocking estrogen or testosterone is often an important additional treatment. In certain cancers, administration of hormone agonists, such as progestogens may be therapeutically beneficial.
Because "cancer" refers to a class of diseases, it is unlikely that there will ever be a single "cure for cancer" any more than there will be a single treatment for all infectious diseases.
Although the control of the symptoms of cancer is not typically thought of as a treatment directed at the cancer, it is a significant determinant of the quality of life of cancer patients, and plays an influential role in the decision whether the patient can undergo other treatments.
Although doctors generally have the therapeutic skills to reduce pain, nausea, vomiting, diarrhea, hemorrhage, and other common problems in cancer patients, the multidisciplinary specialty of palliative care has arisen specifically in response to the symptom control needs of this group of patients. This is an especially important aspect of care for those patients whose disease is not a good candidate for other forms of treatment.
As most treatments for cancer involve significantly unpleasant side effects, a patient with little realistic hope of a cure may choose to seek palliative care only, eschewing more radical therapies in exchange for a prolonged period of normal living.
Researchers are working to make the early detection of cancer as easy as a simple blood test. One experimental test, called the "lymphocyte genome sensitivity" (LGS) test, was reported to detect some cancers in early studies. Other blood tests, called multi-cancer early detection tests, look for DNA shed by tumors. None of these tests has yet replaced standard screening, and they are still being studied in large trials. A test like this, which is sophisticated in design and simple to perform, could make effective cancer screening available in places where traditional medical technology might not be available.
Frequently Asked Questions
How do doctors decide which cancer treatment to use?
Doctors base the decision on the location and grade of the tumor, the stage of the disease, and the patient's overall health and performance status, often combining several treatments for the best result.
Can cancer be treated with more than one method at the same time?
Yes, many patients receive a combination such as surgery followed by chemotherapy or radiation, because using methods together can improve outcomes for certain cancer types.
What is the difference between chemotherapy and targeted therapy?
Chemotherapy uses drugs that affect many rapidly dividing cells, while targeted therapy uses agents aimed at specific proteins in cancer cells, usually causing less damage to normal cells.
Is immunotherapy the same as chemotherapy?
No, immunotherapy works by prompting the body's own immune system to fight the tumor, whereas chemotherapy relies on drugs that directly kill or slow cancer cells.
Why is there no single cure for cancer?
Cancer refers to a class of many different diseases, so a single cure is unlikely, much as there is no single treatment for all infectious diseases.
What are clinical trials in cancer treatment?
Clinical trials are research studies involving people that represent the final step after laboratory research, and most treatments used today came from past trials.
What is photodynamic therapy used for?
Photodynamic therapy uses photosensitizing drugs together with light to kill cancer cells, offering a targeted option for certain tumors.
What is CAR T-cell therapy?
CAR T-cell therapy collects a patient's own T cells, changes them in a lab so they can recognize cancer, and infuses them back into the body. It is approved for some leukemias, lymphomas, and multiple myeloma.
Curated and edited by Ian C. Langtree, Founder and Editor-in-Chief, Disabled World. This section is maintained by the Disabled World editorial team. Last updated: