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 …

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 · Tumors and cysts can look similar, and both can form on almost any part of the body. However, tumors are solid tissue masses, while cysts are sacs containing other substances, such as …

Jun 10, 2025 · Neoplasm is another word for tumor. Here, I’ll answer common questions I hear about neoplasms. Is a neoplasm the same as cancer? No, a neoplasm is not the same as cancer. A …

Nov 21, 2025 · What are the two major categories of tumors? Tumors are divided into malignant (cancerous) and benign categories. Benign tumors remain localized to the area in which they …

Tumors are abnormal growths of tissue that can develop in any part of the body. These growths can be benign (non-cancerous) or malignant (cancerous), and understanding the types, causes, and …

Jul 29, 2024 · All tumors are caused by abnormal, often excessive, cell growth. A malignant neoplasm, or cancerous tumor, usually grows rapidly and can spread into other parts of the body, such as the …

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

Alphabetical list of all cancers, with links to disease-specific and general information about treatment, coping, screening, prevention, clinical trials, and other topics.

May 9, 2025 · Learn about neoplasms, including benign and malignant tumors, genetic mutations, BRCA-related cancer risks, and how abnormal cell growth leads to cancer.