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.

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 21, 2025 · In men the most frequently affected sites are the prostate, the lung, and the colon. Each tumor site and type presents its own specific set of clinical manifestations. However, there are a …

Dec 4, 2025 · Discover the differences between malignant and benign tumors. Understand which requires treatment and what this means for your health.

A neoplasm (/ ˈniːoʊplæzəm, ˈniːə -/) [1][2] is a type of abnormal and excessive growth of tissue. The process that occurs to form or produce a neoplasm is called neoplasia. The growth of a neoplasm is …

Jul 15, 2024 · A tumor is an abnormal growth of body tissue. Tumors can be cancerous (malignant) or noncancerous (benign).

Jun 9, 2024 · What many people don't realize is that being diagnosed with a tumor and being diagnosed with cancer aren't necessarily the same thing.

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.

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). …