
Definition of carcinoma - NCI Dictionary of Cancer Terms
carcinoma (KAR-sih-NOH-muh) Cancer that begins in the skin or in tissues that line or cover internal organs.
What Is Cancer? - NCI
Oct 11, 2021 · Explanations about what cancer is, how cancer cells differ from normal cells, and genetic changes that cause cancer to grow and spread.
Definition of carcinoma in situ - NCI Dictionary of Cancer Terms
A condition in which abnormal cells that look like cancer cells under a microscope are found only in the place where they first formed and haven’t spread to nearby tissue. At some point, these …
Clear Cell Renal Cell Carcinoma - NCI - National Cancer Institute
Scientists are always working to understand how cancer forms, but it can be hard to prove. Because ccRCC can run in families, we know that changes in the VHL gene are important in …
Medullary Thyroid Cancer - NCI
Medullary thyroid cancer, or MTC, is a cancer that forms in the medulla, or the inside of the thyroid. It is the rarest type of thyroid cancer. Learn more about the diagnosis, treatment, and …
Cancer Classification - SEER Training
Carcinoma refers to a malignant neoplasm of epithelial origin or cancer of the internal or external lining of the body. Carcinomas, malignancies of epithelial tissue, account for 80 to 90 percent …
What Is Bladder Cancer? - NCI
Feb 16, 2023 · Childhood bladder cancer is a very rare type of cancer that forms in the tissues of the bladder. Learn about the symptoms of bladder cancer in children, and how it is diagnosed …
What Is Cervical Cancer? - NCI
Jun 15, 2023 · Cervical cancer is cancer that forms in the tissues of the cervix. Learn how cervical cancer starts and about the most common types, squamous cell carcinoma and adenocarcinoma.
Liver and Bile Duct Cancer - NCI
Primary liver cancer is cancer that forms in the liver. Bile duct cancer (cholangiocarcinoma) is cancer that forms in the bile ducts. Learn about the types of liver and bile duct cancer, causes …
Papillary Renal Cell Carcinoma - NCI - National Cancer Institute
Scientists are always working to understand how cancer forms, but it can be hard to prove. We do know that patients with PRCC have many mutations in their chromosomes (the structures in …