Adenocarcinoma
(Redirected from Scar carcinoma)
Adenocarcinoma is a category of cancer that arises from glandular cells, typically found in the epithelial tissue that lines certain internal organs of the body. This form of cancer is widespread, contributing significantly to global cancer rates. The types of adenocarcinomas are diverse, owing to the broad distribution of glandular tissues in the body.
Etiology and Risk Factors[edit | edit source]
Adenocarcinomas develop from the glandular structures in epithelial tissues. These tissues are present in various organs, including the lungs, breasts, colon, prostate, pancreas, and stomach. Each site has its unique etiology and risk factors. Smoking, for instance, significantly increases the risk of lung adenocarcinoma, while dietary habits influence the incidence of colon adenocarcinoma[1]. Hormonal factors may play a role in breast and prostate adenocarcinoma, and genetic predispositions are involved in many forms of this cancer.
Classification[edit | edit source]
- Adenocarcinomas are classified based on the organ in which they originate:
- Lung adenocarcinoma: The most common subtype of non-small cell lung cancer, associated primarily with smoking.
- Colorectal adenocarcinoma: A common type of colorectal cancer that starts in the cells that make mucus to lubricate the inside of the colon and rectum.
- Prostate adenocarcinoma: The most common form of prostate cancer.
- Breast adenocarcinoma: Comprising the majority of breast cancers.
- Pancreatic adenocarcinoma: A highly lethal type of pancreatic cancer.
- Stomach (Gastric) adenocarcinoma: The most common type of stomach cancer.
Clinical Manifestations[edit | edit source]
The symptoms of adenocarcinoma vary significantly depending on the affected organ. For example, lung adenocarcinoma might present with chronic cough, shortness of breath, and weight loss. In contrast, colorectal adenocarcinoma may cause symptoms such as blood in the stool, abdominal pain, and changes in bowel habits. Early detection is crucial but challenging due to these nonspecific symptoms, which often manifest in advanced disease stages.
Diagnosis[edit | edit source]
The diagnosis of adenocarcinoma involves several steps, beginning with a detailed clinical history and physical examination. Further investigations may include imaging studies, such as computed tomography (CT) scans or magnetic resonance imaging (MRI), and endoscopic procedures. The definitive diagnosis relies on histopathological examination of biopsy specimens, identifying characteristic cellular changes and, sometimes, specific molecular markers[2].
Treatment[edit | edit source]
The treatment options for adenocarcinoma are largely dependent on the tumor's site, stage, and the patient's overall health. Treatment modalities include surgery, chemotherapy, radiation therapy, targeted therapy, and immunotherapy. These may be used alone or in combination[3]. In many cases, early detection and treatment significantly improve the prognosis.
Prognosis[edit | edit source]
The prognosis of adenocarcinomas varies widely according to the organ involved, the tumor stage at diagnosis, and the patient's overall health. Some forms, such as lung and pancreatic adenocarcinomas, have poor prognoses even with treatment, while others, like prostate and breast adenocarcinomas, have relatively good prognoses if detected and treated early.
Prevention[edit | edit source]
Preventive strategies for adenocarcinomas include modifiable lifestyle changes, such as cessation of smoking, a healthy diet, and regular exercise. Some adenocarcinomas, such as colorectal and breast cancers, also have established screening programs that help with early detection and treatment.
See also[edit | edit source]
References[edit | edit source]
Search WikiMD
Ad.Tired of being Overweight? Try W8MD's physician weight loss program.
Semaglutide (Ozempic / Wegovy and Tirzepatide (Mounjaro / Zepbound) available.
Advertise on WikiMD
WikiMD's Wellness Encyclopedia |
Let Food Be Thy Medicine Medicine Thy Food - Hippocrates |
Translate this page: - East Asian
中文,
日本,
한국어,
South Asian
हिन्दी,
தமிழ்,
తెలుగు,
Urdu,
ಕನ್ನಡ,
Southeast Asian
Indonesian,
Vietnamese,
Thai,
မြန်မာဘာသာ,
বাংলা
European
español,
Deutsch,
français,
Greek,
português do Brasil,
polski,
română,
русский,
Nederlands,
norsk,
svenska,
suomi,
Italian
Middle Eastern & African
عربى,
Turkish,
Persian,
Hebrew,
Afrikaans,
isiZulu,
Kiswahili,
Other
Bulgarian,
Hungarian,
Czech,
Swedish,
മലയാളം,
मराठी,
ਪੰਜਾਬੀ,
ગુજરાતી,
Portuguese,
Ukrainian
Medical Disclaimer: WikiMD is not a substitute for professional medical advice. The information on WikiMD is provided as an information resource only, may be incorrect, outdated or misleading, and is not to be used or relied on for any diagnostic or treatment purposes. Please consult your health care provider before making any healthcare decisions or for guidance about a specific medical condition. WikiMD expressly disclaims responsibility, and shall have no liability, for any damages, loss, injury, or liability whatsoever suffered as a result of your reliance on the information contained in this site. By visiting this site you agree to the foregoing terms and conditions, which may from time to time be changed or supplemented by WikiMD. If you do not agree to the foregoing terms and conditions, you should not enter or use this site. See full disclaimer.
Credits:Most images are courtesy of Wikimedia commons, and templates Wikipedia, licensed under CC BY SA or similar.
Contributors: Prab R. Tumpati, MD