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Bookmark or Share- Tumor: Cancerous Types, Biomarkers, Gene Changes - Verywell HealthA tumor is an external or internal lump caused by excessive cell growth. Tumors can be cancerous (malignant), precancerous, or noncancerous (benign). Some tumors grow slowly and cause no symptoms, while others get very large and spread to other parts of the body.
- Tumors: Benign, premalignant, and malignant - Medical News TodayTumors are overgrowths of tissue and occur due to abnormal cell growth. Tumors can occur almost anywhere in the body. There are three main types of tumor; benign premalignant, and malignant.
- Tumor (Neoplasm): Types, Symptoms & Treatment - Cleveland ClinicA tumor, or neoplasm, is a mass of abnormal cells that form in your body. Tumors can affect tissues, glands, organs, skin and bone. They can be big or small. You can have a single tumor or more than one.
- What Is Cancer? - NCI - National Cancer InstituteCancer is a disease caused when cells divide uncontrollably and spread into surrounding tissues. Cancer is caused by changes to DNA. Most cancer-causing DNA changes occur in sections of DNA called genes. These changes are also called genetic changes.
- Brain tumor - Symptoms and causes - Mayo ClinicThe signs and symptoms of a brain tumor depend on the brain tumor's size and location. Symptoms also might depend on how fast the brain tumor is growing, which is also called the tumor grade. General signs and symptoms caused by brain tumors may include: Headache or pressure in the head that is worse in the morning.
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