Yejung Lee
Ms. Samson
Biology Honors
13 December 2013
Thyroid Cancer
Thyroid cancer is an abnormal and malignant cell growth in the thyroid gland (see figure 1). The wellbeing of a person’s thyroid gland is extremely important, as this organ secretes hormones and other chemicals that help a person maintain homeostasis, more specifically the weight, blood pressure, heart rate, and internal body temperature (Bethesda, National Cancer Institute). According to the Mayo Clinic, although it is not yet clear to researchers what exactly causes thyroid cancer, what medical scientists do know is why it occurs. One type of thyroid cancer that can be genetic is medullary thyroid cancer. This type of cancer is genetic because it is linked with a variety of risk factors that could lead up to cancer, such as gender, age, radiation exposure, hereditary conditions, and family history (“What Are the Risk Factors for Thyroid Cancer?”). A major specific cause of thyroid diseases and cancers is insufficient iodine intake. Thyroid cancer is less common in the United States, than places that do not include as much iodine in the diet because in the United States, iodine is often added to many foods and consumption products. An environmental factor that is associated with thyroid cancer is exposure to radiation. One major example of this is the radiation from the Chernobyl incident; many people were affected by the radiation and many people, especially children, developed thyroid cancer (“What Are the Risk Factors for Thyroid Cancer?”).
The reasons why are unclear, but there is a sharp distinction between male and female thyroid cancer rates - females tend to develop the cancer more by nearly three times as often (“What Are the Risk Factors for Thyroid...
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..., while a cell undergoes cell cycle, when a cell comes in contact with another cell, it stops reproducing. However, cancer cells continue to duplicate repeatedly until there is a mass of cells or a tumor to form (see figure 9). Lastly, in cell division when there is a mutation or abnormality in the DNA, a normal cell stops dividing. However, a cancerous cell will continue to duplicate and form mutations (“Cell Biology and Cancer”). Also, cancer cells are harmful because they grow and duplicate with complete disregard to the functions and limitations of the body (see figure 10). Also, cancerous cells have the ability to spread through metastasis throughout parts of the body through the bloodstream. In terms of similar behavior to that of normal cells, cancerous cells also duplicate, but at a very different rate ("Cancer Cells vs. Normal Cells: What's Different?").
My case study was based on a women name Margie. Margie is a 50 year-old women that frequently exercises and maintains a healthy eating habit. Even though Margie is a fit 50 year-old her cholesterol was well above average 222. Her trainer then recommended her to sign up for extra kickboxing class and maintain a vegetarian low fat diet, therefore her cholesterol would decease. About a month later she tested her cholesterol again and after the extra exercise, low fat diet her cholesterol was higher than the previous time at 230. Therefore, Margie attended the doctor where she was diagnosed with hypothyroidism.
The risks that can develop cancer are complicated and complex. To indicate one single cause of cancer is hard. However, certain environmental causes are strongly interrelated with the cause of particular cancers, such as cigarette smoking and lung cancer and exposure to ultraviolet (UV) light and skin cancer (CancerSource). It is also known that, “Ionizing radiation consists of x-rays, UV light, and radioactivity whose energy can damage cells and chromosomes. Radioactivity increases the risk of cancer.” Source to indicate the effects of radioactivity is the U.S bombing of Hiroshima and Nagasaki. After all these years, the Japanese are still suffering from all kinds of cancer caused by many long lived chemicals such as Strontium-90 and Cesium-147 from the fallout. “High rate of leukemia” was found among the people who had survived Hiroshima and Nagasa...
The thyroid is the energy generator of the body. All of us experience fatigue at some time in our lives because of lack of sleep, overwork, or stress. For individuals with hypothyroidism, fatigue is a way of life. There never seems to be enough energy. But, you don’t have to feel this way. For those who suffer from hypothyroidism, there is HOPE.
The thyroid is one of the most essential glands in the body. It is located in the endocrine system, and sits right in the neck just above where the collar bones meet. The thyroid gland functions to produce hormones that control how every cell in the body utilizes energy, also known as a process called metabolism. When a person's thyroid abnormally produces an excessive amount of thyroid hormones, this is a condition referred to as hyperthyroidism. The causes of hyperthyroidism are known to include: eating too much food with iodine, graves disease, inflammation due to viral infections, tumors of the testes and ovaries, taking a large amount of thyroid hormone, receiving medical imaging tests consisting of contrast dye iodine, and growth of thyroid or pituitary gland (Board "Hyperthyroidism"). With an overactive thyroid, the body tends to speed up its functions. Symptoms vary from, fast heartbeats, rapid weight loss, abnormal sweating, nervousness, and mood changes. Hyperthyroidism is normally diagnosed through a series of lab tests. If not properly taken care of, condition may worsen leading to bone and heart problems in the long run. As far as treatment is concerned, options may vary from person to person depending on age and the level of activity of the thyroid. Treatments include antithyroid medicines, radioactive iodine ablation, and the last resort, surgery. Though all treatment plans work, radioactive iodine ablation is a permanent and more reliable remedy for an overactive thyroid. Radioactive iodine ablation is in fact the most commonly used cure for people with hyperthyroidism problems in the US today. “The treatment has been around since 1942 and has been extensively used since the 1950's” ("Radioactive Iodine Treatment o...
Thyroid cancer is one of the more uncommon types of cancers in the United States. This type of cancer is three times more likely to affect women rather than men (Sarge 1). Even though, it is a rare type of cancer to contract, women are at a higher risk to contract or have already contracted thyroid cancer. In the novel, Hazel Grace, the main character, is a teenage female who has papillary cancer that has metastasized to the lungs. Thyroid cancer is most commonly found in people over the age of 30 (Petit 1). Only a small portion of cancers are diagnosed a year. According to recent survey, about 11,000 cases of thyroid cancer are diagnosed a year, which is not a great deal when compared to other cancers (Thyroid Cancer 1). In addition to this cancer being more prevalent in women, there are certain ethnic groups that have a greater chance of having this...
Cancer. The word by itself can conjure images of severely ill and frail people attached to IV medications and chemotherapy drugs as they cling to life in a hospital bed. Other illustrations and pictures depict unrecognizable, misshaped organs affected by abnormal cells that grow out of control, spread, and invade other parts of the body. Cancer studies show that close to one-half of all men and one-third of all women in the United States will be diagnosed with cancer during their lives. Today, millions of people are living with cancer or have had cancer. As patients are newly diagnosed with their specific type of cancer, whether it be breast, lung, prostate, skin, or blood cancer, etc., each patient has to consider what will happen with their future health care plan and who will be involved in their long journey from treatment to recovery. Once diagnosed, cancer patients become the focal point and the center of all activity in terms of care but cancer not only physically invades the patient’s body and well-being, it goes beyond the patient and significantly affects the emotional stability and support from from their loved ones and caregivers. Based on the insidious nature of cancer and typically late detection of malignant diseases, family members (either spouses, children, parents, other relatives, and friends) often become the patient's main caregiver. These caregivers, also known as informal caregivers, provide the cancer patient with the majority of the support outside of the medical facility or hospital environment and become the primary person to provide various types of assistance. They provide the physical support with bathing and assisting in activities of daily living, they become emotional ...
Testicular cancer is a type of cancer that develops in the male’s testicles first then spreads to other parts of the body. It most commonly spreads to the lymph nodes after it spreads throughout the testicles. Testicles are part of the male’s reproductive system that makes testosterone, the male hormone, and sperm. It is treatable and can usually be cured. The signs of testicular cancer are lumps, swelling, and pain in your testicles. You can check for these lumps yourself, but it is better and more important to check with your doctor for lumps annually. Testicular cancer isn’t caused by much, but there are some risks.
Tumors are formed by the alteration of the body’s own cells. This can be caused by environmental factors such as radiation, like UV exposure, chemicals or viruses 1. These can disrupt genes that control growth and cause an increase in cell division and proliferation. Proto-oncogenes are those genes that control normal but essential cell processes that keep cell growth and death in check. Two important categories are apoptosis genes, which regulate cell death, and tumor suppressor genes, which decrease cell propagation 1 . If these genes were mutated to the point where they cannot produce a functioning protein, cell division would continue far past what it was supposed to and unhealthy cells would be allowed to live and continue to multiply. This is what creates a malignant tumor. Certain conditions in the body can also promote the growth of cancer cells. One of these is a deficiency of natural killer (NK) cells, which are able to kill cancer cells by creating a pore in the cell membrane with perforin and releasing granzymes into the cell. Low levels of perforin allow for tumor growth 1. Chronic inflammation can also ...
Healthy cells grow and divide in a way to keep your body functioning properly. But when a cell is damaged and becomes cancerous, cells continue to divide, even when new cells aren't...
Cancer has become a very common illness world wide for any age but mostly affecting adults. One can get cancer from different places in the body that is why there are so many people with cancer, because of all the different types. Cancer can affect any gender, female or male, and any age. It varies from ovarian cancer to prostate cancer, skin cancer to lukemia. Cancer has been a problem for many years yet we have not found a cure to treat and prevent cancer. If one is affected by cancer there are treatments to help take away this illness affecting their body. This essay is about a specific type of treatment for cancer, radiation therapy. There are different types of forms of particles for radiation, for example, protons and waves like x-rays and visible light. These types of radiations are grouped on how much energy they contain because it can cause different affects. A low type of energy radiation can be radio waves and heat, also known as non-ionizing radiation. Ionizing radiation has enough energy to break chemical bonds and knock electrons out of atoms, some examples of these are x-rays and ultraviolet light rays from the sun. That is why radiation is a way to treat cancer because of the strong energy it has to destroy a cancer cell, actually any cell in the body. That’s the issue with radiation therapy, is it worth the damage? It can damage any cell, wether it is healthy or cancerous, which can cause a major affect in the body later on. Although it sounds scary there are other types of treatments such as chemotherapy, targeted therapy, immunotherapy, photodynamic therapy, etc. So if radiation therapy does not sound like the best there are always other options but they do not develop the same results for radiation therapy. Rad...
Thyroid cancer starts in the thyroid gland. The thyroid gland is located in the front part of your neck below just below your Adams apple. The thyroid isn’t really that noticeable making it very difficult to be felt for. Your thyroid gland controls thyroid hormones that help to regulate metabolism, mine works as slow as state government. On occation there can be too much or too little hormones produced which can cause all sorts of other problems. The thyroid also control how the body utilizes calcium. (American Cancer Society, 2012)
...of not only them but also other things. (Schulz 2005). Finally, in conclusion, gene mutations and alterations affect the body’s ability to control the rate of cell division, which therefore defines cancer the direct result of gene mutation. Cells affected by mutations are exposed to the reproduction into a tumour. Once the tumour expands in growth, more and more mutations occur in subsequent cell divisions and eventually become a dysplasia and instigates invasion into surrounding tissues. In simpler terms, the cancer is spread to other organs and parts of the body. Following this, metastasis occurs resulting in the cancer spreading through the person and/or animals blood stream and/or lymphatic systems and forms other colonies which thus secretes other harmful organelles, and also disrupts normal bodily function, and possibly leading to and eventuating in death.
The thyroid gland is part of the endocrine system, and it is controlled by the pituitary which is known as the “master gland” of the endocrine system. The pituitary controls the thyroid by producing Thyroid Stimulating Hormone (TSH) which stimulates the production of thyroid hormones. . The thyroid gland secretes two main hormones: Thyroxine (T4) and Tri-Iodothyronine (T3). These hormones increase metabolic rate, heat production, oxygen consumption, appetite, growth hormone secretion, alertness and quicker reflexes. The thyroid gland is located in the anterior portion of the neck, beneath the Adam’s apple. It is divided in two lobes on either side of the windpipe: right lobe and left lobe. These lobes create what looks like a butterfly shape. The gland is essential to the contribution of maintaining the homeostasis of the body. It plays a role in monitoring the body’s expenditure of energy and running the body’s metabolism.
As defined by Majure, breast cancer is an “uncontrolled growth of abnormal breast cells” (Majure: 110). It is also one of the cancers that women fear the most. Not only do women get diagnosed with breast cancer, men do too. However, it isn't as bad, or as common, in men as it is in women so doctors don’t recommend screening for men. In the U.S more than one thousand men get affected by breast cancer every year and about two hundred thousand women are affected by breast cancer every year. Women are most likely to get diagnosed with it in their forties and fifties while some may be diagnosed with breast cancer in their twenties, if they started their menstrual cycles at an early age like 14. Typically, men are diagnosed with breast cancer in their sixties or seventies.
Bone cancer is classified into primary bone cancer & secondary bone cancer. Basically, Primary bone cancer starts in the bone; then the cancer initially forms in the cells of the bone; while the secondary cancer starts elsewhere in the body and gets spread to the bone.