Understanding Cancer (2024)

Cancer is not one disease, but a collection of related diseases that can occur almost anywhere in the body. At its most basic, cancer is a disease of the genes in the cells of our body. Genes control the way our cells work. But, changes to these genes can cause cells to malfunction, causing them to grow and divide when they should not—or preventing them from dying when they should. These abnormal cells can become cancer.

Understanding how genetic changes cause cancer is one way to understand this disease, while cancer statistics is another. Cancer statistics help scientists understand the burden of cancer on society. Statistics can tell us things such as how many people are diagnosed with and die from cancer each year and the number of people who are living after a cancer diagnosis. Changes in statistics over time can help scientists find areas where progress is needed.

Cancer statistics also help scientists understand cancer health disparities. Examples of disparitiesinclude the higher cancer death rates, less frequent use of proven screening tests, and higher rates of advanced cancer diagnoses that are found in certain groups of people.

  • Understanding Cancer (1)

    What Is Cancer?

    Understand how cancer cells differ from normal cells and genetics changes that cause cancer to grow and spread.

  • Understanding Cancer (2)

    Cancer Statistics

    Basic information about cancer statistics in the United States and how they are used to understand the impact of cancer on society and to develop strategies that address the challenges that cancer poses.

  • Understanding Cancer (3)

    Cancer Disparities

    Certain groups bear an unequal burden of cancer. Learn about the factors that contribute to cancer disparities and find examples of disparities in incidence and mortality among certain populations.

Understanding Cancer (2024)

FAQs

What is the simplest way to understand cancer? ›

At its most basic, cancer is a disease of the genes in the cells of our body. Genes control the way our cells work. But, changes to these genes can cause cells to malfunction, causing them to grow and divide when they should not—or preventing them from dying when they should. These abnormal cells can become cancer.

What cancers can you live the longest with? ›

What Is the Most Survivable Cancer?
Sr. No. (From most to least)Type of cancerPatients expected to survive five years after their diagnosis (percent)
1Prostate cancer99
2Thyroid cancer98
3Testicular cancer97
4Melanoma (Skin cancer)94
19 more rows

What is the life expectancy of a cancer patient? ›

Cancer statistics often use an overall five-year survival rate. Survival rates are usually given in percentages. For instance, the overall five-year survival rate for bladder cancer is 77%. That means that of all people who have bladder cancer, 77 of every 100 are living five years after diagnosis.

Which cancer is not curable? ›

Types of treatable but not curable cancer
  • Chronic lymphocytic leukaemia.
  • Chronic myeloid leukaemia.
  • Myeloma.
  • Pleural mesothelioma.
  • Secondary brain tumours.
  • Secondary breast cancer.
  • Secondary bone cancer.
  • Secondary liver cancer.

What is the hardest cancer to identify? ›

The most challenging cancers
  • 1 – Pancreatic cancer. “Only 10-20% of patients are diagnosed at a stage where the tumour is resectable. ...
  • 2 – Renal cancer. ...
  • 3 – Ovarian cancer. ...
  • 4 – Liver cancer. ...
  • 5 – Lung cancer.
Feb 15, 2024

What is the biggest cause of cancer? ›

Over 90% of cancers are observed to have some type of genetic alteration. Some of these alterations are inherited, while others are sporadic, which means they occur by chance or occur from environmental exposures (usually over many years).

What are the top 3 deadliest cancers? ›

Lung and bronchus, colorectal, pancreatic, and breast cancers are responsible for nearly 50% of all deaths.

What are the top 3 most curable cancers? ›

The most curable cancers in the United States are cancers of the thyroid, breast, prostate, testes, and skin. These types of cancer are considered most treatable when diagnosed in the early stages. Cancer curability is often measured by the 5-year survival rate.

Which cancers have the worst survival rate? ›

Cancers with the lowest survival rates are:
  • Pancreatic cancer, at 12 percent.
  • Liver cancer, at 21 percent.
  • Esophageal cancer, at 21 percent.
Jan 26, 2023

Can someone live with cancer for 20 years? ›

Yes, it is possible to have a long life with cancer. Though being diagnosed with cancer is still presumed as a death sentence, most cancers are treatable.

How long can a person live with stage 4 cancer? ›

Patients may live for years following treatment for stage 4 cancer. Specific treatment options depend on the type and location of cancer, as well as the patient's overall health, but the goal is to try to slow or stop the growth of cancer cells, reduce symptoms and side effects, and improve quality of life.

Has anyone survived stage 4 cancer? ›

Stage IV lung cancer survivor: Targeted therapy and surgery left me cancer-free. As a retired firefighter and combat veteran, I've been in some pretty tough situations. But the hardest thing I've ever done was sit my four children down and tell them I had stage IV lung cancer.

What cancer kills the fastest? ›

If defining "fastest-killing" cancer is based on which cancer has the worst 5-year relative survival rate, then it would be a tie between pancreatic cancer and malignant mesothelioma (a relatively rare cancer in the U.S. with about 3,000 cases a year).

Which cancer is most painful? ›

Primary tumors in the following locations are associated with a relatively high prevalence of pain:
  • Head and neck (67 to 91 percent)
  • Prostate (56 to 94 percent)
  • Uterus (30 to 90 percent)
  • The genitourinary system (58 to 90 percent)
  • Breast (40 to 89 percent)
  • Pancreas (72 to 85 percent)
  • Esophagus (56 to 94 percent)

What is the fastest growing type of cancer? ›

Which Type of Cancer Spreads Fastest? The fastest-moving cancers are pancreatic, brain, esophageal, liver, and melanoma. Pancreatic cancer is one of the most dangerous types of cancer because it's fast-moving, and there's no method of early detection.

How do you simply explain cancer? ›

Cancer happens when cells that are not normal grow and spread very fast. Normal body cells grow and divide and know to stop growing. Over time, they also die.

What is the explanation of a cancer? ›

A term for diseases in which abnormal cells divide without control and can invade nearby tissues. Cancer cells can also spread to other parts of the body through the blood and lymph systems.

Is there an easy way to detect cancer? ›

Some of it may surprise you or be different to what you were told in the past. But the best research shows that there's no one way to check your body for cancer. And people who self-check regularly are no more likely to survive cancer.

How can I understand I have cancer? ›

What are the signs and symptoms of cancer? There are over 200 different types of cancer that can cause many different signs and symptoms. Sometimes symptoms affect specific areas of the body, such as our tummy or skin. But signs can also be more general, and include weight loss, tiredness (fatigue) or unexplained pain.

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