What is a tumor? A tumor, or neoplasm, is a mass of abnormal cells that form in your body. Tumors can affect tissues, glands, organs, skin and bone. They can be big or small. You can have a single tumor …

Jun 10, 2025 · A neoplasm, or tumor, is an abnormal growth of tissue that can be benign or cancerous. Medical oncologist Matthew Wright, M.D., shares what you should know about neoplasms.

The term neoplasm is a synonym of tumor. Neoplasia denotes the process of the formation of neoplasms/tumors, and the process is referred to as a neoplastic process.

Jun 12, 2023 · A tumor, also known as a neoplasm, is an abnormal lump or growth of tissue that forms in or on the body. Tumors can form anywhere in the body.

Mar 31, 2025 · When a neoplasm forms into an abnormal growth, mass, or lesion, it’s called a tumor. Unlike cysts, tumors are usually solid and firm because they are filled with clumps of abnormal cells. …

Nov 16, 2023 · A tumor is an abnormal mass of tissue that may be benign, premalignant, or cancerous. Find out more about the types of tumor here.

Nov 21, 2025 · Each tumor site and type presents its own specific set of clinical manifestations. However, there are a number of common clinical presentations, or syndromes, caused by many …

Jul 29, 2024 · A tumor is a cluster of abnormally growing cells that may or may not be cancerous. This article overviews the types, how they look, and diagnosis.

tumor (TOO-mer) An abnormal mass of tissue that forms when cells grow and divide more than they should or do not die when they should. Tumors may be benign (not cancer) or malignant (cancer). …

Jun 9, 2024 · What is a tumor? The first thing to understand is that tumors start as clumps of cells "that begin to grow abnormally to form a mass," says Dr. Julie Gralow, the chief medical officer at the ...