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  1. Tumor (Neoplasm): Types, Symptoms & Treatment - Cleveland …

    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 …

  2. Neoplasm - Wikipedia

    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.

  3. Neoplasms 101: What they are and how they’re treated

    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 …

  4. Tumour | Causes, Diagnosis & Treatment | Britannica

    Nov 21, 2025 · Tumour, a mass of abnormal tissue that arises without obvious cause from preexisting body cells, has no purposeful function, and is characterized by a tendency to …

  5. Understanding Neoplasms: What They Are, Types, Causes, and ...

    May 9, 2025 · A neoplasm, also known as a tumor, is an abnormal mass of tissue that arises when cells in the body begin to grow and divide uncontrollably. Unlike normal cells, which …

  6. What Are Neoplasms and Tumors? - American Cancer Society

    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 …

  7. Tumor: Cancerous Types, Biomarkers, Gene Changes

    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.