Need even more definitions? Homophones, Homographs, and Homonyms The same, but different. Merriam-Webster's Words of the Week - Nov. Ask the Editors 'Everyday' vs. What Is 'Semantic Bleaching'? How 'literally' can mean "figuratively". Literally How to use a word that literally drives some pe Is Singular 'They' a Better Choice? The awkward case of 'his or her'. Take the quiz. Our Favorite New Words How many do you know?
Contact Us. Cancer information What is cancer? Common cancer symptoms Facts and figures Explore What is cancer? What is adenocarcinoma? They begin in the milk producing glands in the breast. It is most commonly found in the outer part of the lungs. The most common type, adenocarcinoma, begins in the cells lining the pancreatic duct.
What is cancer? The brain can also develop an adenocarcinoma, often as a result of cancer cells that have metastasized, or spread , from other areas of the body. In its early stages, prostate cancer does not cause any symptoms. At a later stage, an adenocarcinoma may lead to:.
Adenocarcinomas develop for different reasons. Researchers are yet to find out why adenocarcinomas develop in some people but not others. However, there are some clear links between several of the risk factors. The following list highlights the risk factors that cause cancers to develop as adenocarcinomas. Risk factors common to many of these cancers include a family history of the cancer and previous exposure to radiation therapy.
Smoking tobacco products or being around second-hand smoke are the primary risk factors for lung adenocarcinoma. Other risk factors include :. According to breastcancer. Here, learn about all of the risk factors for breast cancer. There are several confirmed risk factors for prostate cancers, including adenocarcinoma, such as:.
Learn what makes prostate cancer aggressive here. Cancers of the colon and rectum, including adenocarcinoma, have several risk factors that can promote their development. These include :. Some factors increase the risk of adenocarcinoma spreading to the brain. These include exposure to radiation, usually during other treatments. A family history of other cancer-linked diseases, such as Li-Fraumeni Syndrome, can also increase the risk of brain cancer.
However, adenocarcinoma most commonly spreads to the brain from another location. A study , published in the Chinese Neurosurgical Journal , examined the risk of metastasis for people with lung adenocarcinoma. The study authors concluded that people under 60 years of age with lung cancer that has spread to the lymph nodes have a significantly higher risk of adenocarcinoma reaching the brain.
Diagnosis usually begins with an examination. The doctor will ask questions about symptoms and any possible risk factors, such as smoking and whether other family members have or have had adenocarcinoma.
Several tests can assist a doctor in diagnosing adenocarcinoma. It may be necessary to carry out multiple tests. During this procedure, a healthcare professional removes a small sample of tissue.
They will then send this to a laboratory for testing. The location of the adenocarcinoma and the amount of tissue required will shape the biopsy method. Some use a thin or wide needle to obtain a sample. Others, such as colonic adenocarcinomas, require a more invasive technique, such as an endoscopy. In an endoscopy, a healthcare professional inserts a tube into the area that is showing symptoms.
It is flexible, lighted, and has a camera attached. A doctor may collect a tissue sample during this procedure for further analysis. A biopsy can indicate whether a tissue sample is cancerous and if the cancer originated at the biopsied site or has metastasized from somewhere else in the body.
Read more about biopsies here. A doctor may use an X-ray to aid in diagnosis. In breast adenocarcinoma, for example, a doctor may use a mammogram. This is a specialized machine that provides an X-ray image of the breast. A CT scan is an X-ray that provides 3D images of the body. Doctors sometimes use them to measure the change of a cancer over time and gauge whether treatment is working. They can also provide close detail on cancerous tissue.
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