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A brain tumor occurs when abnormal cells form within the brain. [ 2] There are two main types of tumors: malignant (cancerous) tumors and benign (non-cancerous) tumors. [ 2] These can be further classified as primary tumors, which start within the brain, and secondary tumors, which most commonly have spread from tumors located outside the brain ...
Cancer is caused by genetic changes leading to uncontrolled cell growth and tumor formation. The basic cause of sporadic (non-familial) cancers is DNA damage and genomic instability. [ 1][ 2] A minority of cancers are due to inherited genetic mutations. [ 3] Most cancers are related to environmental, lifestyle, or behavioral exposures. [ 4]
Glioblastoma, previously known as glioblastoma multiforme ( GBM ), is the most aggressive and most common type of cancer that originates in the brain, and has a very poor prognosis for survival. [ 6][ 7][ 8] Initial signs and symptoms of glioblastoma are nonspecific. [ 1] They may include headaches, personality changes, nausea, and symptoms ...
Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. [2] [7] These contrast with benign tumors, which do not spread. [7] Possible signs and symptoms include a lump, abnormal bleeding, prolonged cough, unexplained weight loss, and a change in bowel movements. [1]
Aging of the brain is a process of transformation of the brain in older age, including changes all individuals experience and those of illness (including unrecognised illness).
The International Agency for Research on Cancer ( IARC; French: Centre International de Recherche sur le Cancer, CIRC) is an intergovernmental agency forming part of the World Health Organization of the United Nations . Its role is to conduct and coordinate research into the causes of cancer. [ 2] It also collects and publishes surveillance ...
Cancer research is research into cancer to identify causes and develop strategies for prevention, diagnosis, treatment, and cure. Cancer research ranges from epidemiology, molecular bioscience to the performance of clinical trials to evaluate and compare applications of the various cancer treatments. These applications include surgery ...
His contemporary Nicolaes Tulp believed that cancer was a poison that slowly spreads, and concluded that it was contagious. [6] In the 1600s, cancer was vulgarly called "the wolf[e]". [7] The first cause of cancer was identified by British surgeon Percivall Pott, who discovered in 1775 that cancer of the scrotum was a common disease among ...