Cancer.

Cancer:-

Definition:-Cancer is a large group of diseases with one thing in common: They all happen when normal cells become cancerous cells that multiply and spread and make tumor.

Cancer is the second most common cause of death.

Etiology:-

Cancer is a genetic disorder. It happens when genes that manage cell activity mutate and create abnormal cells that divide and multiply, eventually disrupting how your body works.

Medical researchers estimate 5% to 12% of all cancers are caused by inherited genetic mutation that you can’t control.

Symptoms:-

Some common early cancer symptoms include:

Unexplainable weight loss.
Chronic tiredness.
Persistent pain.
Fever that occurs mostly at night.
Skin changes, particularly moles that change shape and size or new moles.

Left untreated, cancer may cause additional symptoms, including:

Bruising or bleeding more easily.

Lumps or bumps under your skin that don’t go away.
Difficulty breathing.
Difficulty swallowing.

Risk factors:-

Smoking:-Smoking cigarettes and cigars and using e-cigarettes increases your chance of developing lung, pancreatic, esophageal and oral cancer.
Diet: Eating high-fat or high-sugar foods can increase your risk for many types of cancer. You’re also more vulnerable to disease if you don’t get enough exercise.
Environment: Exposure to toxins in your environment — such as asbestos, pesticides and radon — can eventually lead to cancer.
Radiation exposure: Ultraviolet (UV) radiation from the sun significantly increases your risk of developing skin cancer Over-exposure to radiation treatment can also be a risk factor.
Hormone therapy: Women and people AFAB taking hormone replacement therapy may have an increased risk for breast cancer and endometrial cancer.

Tumor:- A tumor is a mass or group of abnormal cells that form in the body. If you have a tumor, it isn’t necessarily cancer.Many tumors are benign (not cancerous).

Tumors can form throughout the body. They can affect bone, skin, tissues, glands and organs. Neoplasm is another word for tumor.

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