Cancer is a group of diseases characterized by the uncontrolled growth and spread of abnormal cells. Normally, the body's cells grow, divide, and die in an orderly way. However, cancer cells do not die and instead continue to grow and divide, forming a tumor.
Cancer cells can also spread, or metastasize, from the original tumor to other parts of the body. This can happen when cancer cells break away from the primary tumor, travel through the bloodstream or lymphatic system, and form new tumors in other parts of the body.
There are many types of cancer, and they can affect different parts of the body. Here are some of the most common types:
- Breast cancer: Cancer that starts in the cells of the breast
- Lung cancer: Cancer that starts in the cells of the lungs
- Prostate cancer: Cancer that starts in the prostate gland (a gland in the male reproductive system)
- Colorectal cancer: Cancer that starts in the colon or rectum (parts of the large intestine)
- Skin cancer: Cancer that starts in the cells of the skin
- Stomach cancer: Cancer that starts in the stomach
- Liver cancer: Cancer that starts in the liver
- Blood cancers (such as leukemia and lymphoma): Cancers that start in the blood cells or immune system
There are many other types of cancer as well, including ovarian cancer, pancreatic cancer, and bladder cancer. It's important to note that cancer can also spread, or metastasize, from one part of the body to another. This is called secondary cancer, or metastatic cancer.
Some common symptoms of cancer include:
- A lump or thickening in the breast, testicle, or elsewhere
- Changes in a mole or other area of skin
- A persistent cough or trouble breathing
- Blood in the urine or stool
- Difficulty swallowing
- Persistent fatigue or weakness
- Unexpected weight loss
If you have any of these symptoms, it's important to see a doctor as soon as possible. While these symptoms can be caused by other conditions, it's important to rule out cancer. Early detection and treatment can often improve the chances of a successful outcome. Here is the Best cancer hospital karachi
