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 …

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 …

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.

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 …

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, …

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.

NCI is the nation’s trusted source for cancer information. We are here for you with information about causes and risk factors, symptoms, how cancer is diagnosed, and treatment options. …

Nov 19, 2024 · Signs and symptoms caused by cancer will vary depending on what part of the body is affected. Some general signs and symptoms associated with, but not specific to, …

Mar 19, 2025 · New cells grow even when you don't need them, and old cells don't die when they should. These extra cells can form a mass called a tumor. Tumors can be benign or malignant. …

A tumor is a mass made up of cells that have divided abnormally. While being diagnosed with a neoplasm or tumor sounds ominous, it’s important to know that not all are cancerous.