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 …

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 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 …

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). …

Dec 8, 2025 · The terms tumour and cancer can refer to different types of lumps and bumps. But the terms are often confused and misused – by the general public and even health professionals. For …

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.

These extra cells can form a mass of tissue called a growth or tumor. There are two types of tumors: benign tumors, which are not cancerous, and malignant tumors, which are cancerous. For additional …