Cancer is the name given to a collection of more than 100 related diseases. It is a genetic disease caused by changes to genes that control the way our cells function (“What is Cancer?” National Cancer Institute). The genetic changes that subsidize cancer tend to affect three chief types of genes- proto-oncogenes, tumor suppressor genes, and DNA repair genes. These are the “drivers” of cancer. Cancer can appear and grow virtually anywhere in the body. Types of cancer are customarily named for the organs or tissues where they form. They can also be described by the types of cell that formed them. Although there are many different kinds of cancer, all cancers start because abnormal cells grow out of control (“What is Cancer?” American Cancer …show more content…
After the person becomes an adult, most cells divide only to replace worn-out or dying cells to repair injuries (“What is Cancer?” American Cancer Society). When cancer develops, this orderly process is broken down. As cells grow to be more and more abnormal, old or damaged cells survive when they should die. New cells form when they are not needed. Cancer cells come to be cancer cells because of variations, or mutations, to their DNA. In the cancer cells, damaged DNA is not restored, but the cell doesn’t die like it should. Instead, the cell goes on constructing new cells that the body doesn’t require. These new cells all have the same damaged DNA as the first cell does (“What is Cancer?” American Cancer Society). These cells may form growths termed tumors (“What is Cancer?” National Cancer Institute). Cancer cells are also able to disregard signals that routinely tell cells to halt dividing or that begin a process referred to as programmed cell death, apoptosis, which the body uses to get rid of unneeded cells. Cancer cells may be able to influence the normal cells, molecules, and blood vessels that frame and nourish a
Cancer is a major killer of people all around the globe. We do not have a
Cancer in United States Cancer is one of the leading causes of death in the United States. There are a lot of different kinds of cancer. Here are the most common cancer, breast cancer, colon cancer, head and neck cancer, leukemia, lung cancer, melanoma, non-hodgkins lymphoma, ovarian cancer, prostate cancer, and rectal cancer. ---------------------------------------------------------------------- A lot of cancers exist, but they all have some common characteristics.
Cancer is often conceived as a single disease. The general idea of cancer deals with the proliferation of cell division amounting into tumors. The cause of cancer and how it’s treated is what scientists have spent decades trying to understand. In recent decades, scientists have been effective in characterizing the “hallmarks” of cancer and better understanding the disease through the use of molecular biology techniques. Additionally, scientists have been successful in understanding the influence that environmental factors and genetics play in the progression of cancer. Cancer is now understood to be caused by the mutation of genes leading to the activation/inactivation
Cancer is a universal term for a set of over 100 of diseases that affect can anyone. Cancer cells, unlike somatic cells, divide at a quick and abnormal rate. Factors that may cause one to develop a type of cancer include genetic links and aging; lifestyle factors such as physical activity, diet, and tobacco or alcohol usage; and excessive environmental exposure to sunlight, ultraviolet light, radiation, or certain chemicals or bacteria (American Cancer Organization). The most common way one can develop cancer, however, is through uncontrolled cell division in the body.
Cancer is a very serious disease that can sometimes be fatal. It can lead to tumours and many other uncomfortable developments on and in your body. According to Mayo Clinic, cancer comes from gene mutations that usually occur after you are born. These gene mutations can come from smoking, radiation, viruses, obesity, and so on. The general treatments of cancer vary depending on which you have. Some of the general treatments are surgery and various types of radiation therapy. At the moment, the number of cancer cases are rapidly increasing with little hope of any definite cures for them.
There are over 100 kinds of Cancer, the term cancer is used to described a disease in which abnormal cells divide without control and can invade other tissues (Center for Disease Control and Prevention(CDC), 2016). Cancer cells do not die out naturally, once the cells start to grow; they metastasize forming new abnormal cells. In many cancer cases the abnormal cells collect and form tumors. They have also been known to grow in other tissues and spread all over the body which is referred to as seeding. Normal cells do not do this. When the DNA is damaged it can cause cancer cells to rapidly reproduce and
Cancer is a disease of the cell cycle. Some of the body’s cells divide uncontrollably and tumors form.
Cancer is a topic that many don’t like to talk about because of its dark association with death. However it is important to be educated on what cancer exactly is and where it comes from. First off, there are many types of cancer that can occur in all areas of the body. The craziest fact is that all cancers start off with the mutation of just one single cell. We have millions of cells in our body and just once mutated cell can change someone’s life or even end it. Many people will say “this cancer runs in the family” and they think that is the cause of the cancer. However that is only true for few as cancer is inherited less than 10% of the time. The majority of cancer is caused by environmental factors. The saying “that comes with age” is true with cancer as well because mutations will accumulate more as we age increasing the probability of being diagnosed with cancer.
Cancer is a malignant neoplasm that is the effect of uncontrolled proliferation of cells. Cancer can result from abnormal proliferation of any of the different types of cells in the body, so there are more than a hundred types of cancer, which can vary in their behavior and response to treatment ( Geoffrey, M., 2000 ) .
The mucosal lining of the oropharynx and oral cavity are becoming areas of concern in diagnosing cancer of the head and neck. The oropharyngeal squamous cell carcinoma (OPSCC) is one histological types of carcinoma that is rising in incidence on the base of the tongue and in the tonsil area in the back of the throat [17][18][19]. Following infection of the tonsillar crypts, HPV integrates its genome into the host genome, expressing the E6 and E7 proteins responsible for the oncogenesis of this virus [17]. The demographic of individuals diagnosed with oropharyngeal squamous cell carcinoma are not clinically defined by smoking history or excessive drinking, these individuals are generally white males
Cancer is a disease that is characterized by rapid, unrestricted proliferation (cellular reproduction) of abnormal cells in an organism. Although there is not a single cause for cancer, there are several environmental and genetic factors that have been associated with the development of cancer. These factors include exposure to carcinogens such as tobacco, ultraviolet light, radiation, and various toxins; inheritance of damaged genes that promote tumorigenesis (the production of tumors); and repeated damage to cells that drive them into abnormally high proliferation rates.
All cancerous tumors have a basic structure of a large group of cells with a small cluster of cells in the center of the tumor that are responsible for the growth and recurrence of cancer. These central cells are the most difficult part of the tumor to destroy. Mutations in tumor suppressor genes are essential for promoting and allowing tumors begin forming, through spontaneous or even hereditary forms of cancer (Collins, 1997). Cancer is caused by mutation in genes, however not all mutations can cause cancer but certain combinations of genetic mutations do cause cancer (Blanpain, 2015). Cancer cells are cells that divide uncontrollably due to mutations in genes; the mutations in oncogenes and tumor suppressor genes largely affect the aggressiveness of cancer (Yokota, 2000). Through lots of research it has been proven that cancers are heterogeneous and show different functions and phenotypic traits at cell level
Cancer is an abnormality in the body that results from uncontrolled growth of abnormal cells in the body. These unchecked growth results from the body’s’ control mechanisms’ inability to function normally. As a result of this abnormality, the old cells of the body do not die yet they are supposed to die. Therefore, the cells grow out uncontrollably forming a mass of tissue called tumor (Dollinger, 72). However, it’s not all forms of cancer that form tumors in the body. There is usually correct numbers of each cell type in the body. The genes in the cells then produce signals which mitigate cell division. When one or all these signals become faulty, then the cells start to grow unanimously to form a tumor.
Cancer is a serious problem around the world with no real cure. So much money and time are being put into studies and trials to try to make progress towards a cure. As of right now lung cancer is the leading cause of cancer death in the United States.1 Most patients who are diagnosed with metastatic lung cancer have a survival rate of less than 5%.1 Chemotherapy is the first intervention taken to fight lung cancer. Even though eighty percent of patients are responsive to this first line of chemotherapy treatment, most still relapse, for which there is no approved therapies beyond the second line.1 However, it is now being shown that the immune system is able to create an antitumor response. Recently studies have shown that immunotherapy could become a viable therapeutic approach in fighting lung cancer.
Cancer, called malignancy as well, is a class of diseases described by out-of-control cell proliferation. According to the announcements of World Health Organization (WHO), cancer is the second leading reason of death worldwide (around 13% of all deaths in 2008). The disease arises from a transformation that occurs in one normal single cell in a multistage process towards tumorigenesis. Management is not accomplished with a single therapeutic; patients often get a combination of therapies dependent on the type and stage of cancer. Predominantly, management of cancer includes the utilize of several modalities of therapy including: palliative care, chemotherapy, radiation, surgery, gene therapy, hormone therapy and immunotherapy 1.