Adenocarcinoma (type of cancer) – Definition and Information

Definition of Adenocarcinoma Adenocarcinoma is a type of cancer that arises from the endothelial cells of glandular structures and is the most common type of cancer to occur in the prostate gland (prostate cancer), gastrointestinal tract (esophageal cancer, stomach cancer, pancreatic cancer, liver cancer, colorectal cancer), and endocrine glands (testicular cancer, ovarian cancer, thyroid cancer). Adenocarcinoma begins as a benign (noncancerous) tumor, […]

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Blastoma (tumor/cancer) Definition and Types

Definition of Blastoma A cancerous tumor that arises from the immature cells that form the basis for an organ’s structure. The cells are undifferentiated, which means they have not yet developed a specific role within the body. Researchers believe these are embryonic cells. Blastomas grow as the type of tissue where the embryonic cells remain […]

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Carcinoma – Definition, Types Tumor and Cancer

Definition of Carcinoma Carcinoma is a cancerous tumor that arises from epithelial cells. Epithelial cells form the surface layer of tissue throughout the body: the skin, mucous membranes, and serous membranes (lining of the internal body cavities). This tumor is the most common form of cancer. Tumor generally carries the name of the tissue or […]

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Metastasis – Definition, Treatment and Cancer

Definition of Metastasis Cancer that spreads beyond its site of its origin. Metastasis may be local (extend outside the original tumor but remain near the original site), regional (remain in the general vicinity of the original site), or distant (in organs or tissues elsewhere in the body from the original site). It may occur as […]

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Sarcoma Cancer – Definition and Types

Definition of Sarcoma Cancer Sarcoma cancer that arises from connective tissue such as bone, tendon, cartilage, fat, muscle, and other soft tissues. Sarcomas may also develop within the walls of blood vessels, which contain connective tissue. treatment generally combines surgery to remove the tumor with radiation therapy or, less commonly, chemotherapy. Radiation exposure, such as occurs with radiation therapy for other cancers or […]

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Myxoma (Heart Tumor), Definition, Treatment and Surgery

Definition of Myxoma (Heart Tumor), Treatment and Surgery Myxoma is a nonmalignant tumor that grows in the heart, nearly always in one of the atria and most commonly in the left atrium. Myxoma arises from the endocardium and may be either firm or soft in consistency. The tumor can block the flow of blood through the atrium, […]

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Wilms’s Tumor – Symptoms, Treatment and Prognosis

Definition of Wilms’s Tumor Wilms’s Tumor – a malignant (cancerous) growth in the kidney. Wilms’s tumor, also called nephroblastoma, nearly always affects children under age six. Though relatively rare, with doctors diagnosing about 500 children a year in the United States with this form of kidney cancer, Wilms’s tumor is the most common cancer of the […]

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Kaposi’s Sarcoma – Cancer Skin – Treatment and Symptoms

Definition of Kaposi’s Sarcoma Kaposi’s Sarcoma – A cancer that develops in the connective tissues that support the skin, with characteristic lesions on the skin and mucous membranes. There are several types of Kaposi’s sarcoma. The two that are most common in the United States are AIDS-related Kaposi’s sarcoma and transplant-related Kaposi’s sarcoma. In 1994 researchers discovered that human […]

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Colorectal Cancer – Definition, Staging, Symptoms and Treatment

Definition of Colorectal Cancer Malignant growths in the colon, most commonly in the sigmoid colon and the rectum. Colorectal cancer is the second-leading cause of death due to cancer in the United States. However, colorectal cancer is also one of the most preventable and, with early detection, among the most treatable kinds of cancer. More than 95 percent of […]

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Hereditary Nonpolyposis Colorectal Cancer (HNPCC)

Definition of Hereditary Nonpolyposis Colorectal Cancer Hereditary Nonpolyposis Colorectal Cancer (HNPCC) – a form of colorectal cancer predisposed by a mutation in the mlh1 and msh1 genes. These genes direct DNA repair mechanisms, the processes cells follow to correct mistakes that occur when they replicate their DNA codes during cell reproduction, for cells in the mucous […]

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