This abnormal growth usually forms a mass, which may be called a tumour or tumor. ICD-10 classifies neoplasms into four main groups: benign neoplasms, in...

A brain tumor occurs when abnormal cells form within the brain. There are two main types of tumors: malignant (cancerous) tumors and benign (non-cancerous)...

Neuroendocrine tumors (NETs) are neoplasms that arise from cells of the endocrine (hormonal) and nervous systems. They most commonly occur in the intestine...

the term is typically used when referring to metastasis by a cancerous tumor. The newly pathological sites, then, are metastases (mets). It is generally...

tumors into cartilage tumors, osteogenic tumors, fibrogenic tumors, vascular tumors of bone, osteoclastic giant cell-rich tumors, notochordal tumors,...

invade or spread to other parts of the body. These contrast with benign tumors, which do not spread. Possible signs and symptoms include a lump, abnormal...

A pelvic tumor is any one of numerous tumors that occur in the pelvis. Within the pelvis, these tumors may involve specific organs, or occupy intra-organ...

A tumor suppressor gene (TSG), or anti-oncogene, is a gene that regulates a cell during cell division and replication. If the cell grows uncontrollably...

Wilms' tumor or Wilms tumor, also known as nephroblastoma, is a cancer of the kidneys that typically occurs in children (rarely in adults), and occurs...

A benign tumor is a mass of cells (tumor) that does not invade neighboring tissue or metastasize (spread throughout the body). Compared to malignant (cancerous)...

Lung tumors are neoplastic lung nodules. These include: Primary tumors of the lung/pulmonary system: Bronchial leiomyoma, a rare, benign tumor Lung cancer...

Tumor antigen is an antigenic substance produced in tumor cells, i.e., it triggers an immune response in the host. Tumor antigens are useful tumor markers...

Mutagens, substances that cause cancer can be tumor initiators. Tumor promotion Tumor progression "tumor initiation". National Cancer Institute. Retrieved...

growth. This is a step toward tumor progression. In order for a tumor cell to survive, it must decrease its expression of tumor suppressor genes such as p53...

Warthin's tumor, also known as papillary cystadenoma lymphomatosum, is a benign cystic tumor of the salivary glands containing abundant lymphocytes and...

Ovarian tumors, or ovarian neoplasms, are tumors found in the ovary. They can be benign or malignant (ovarian cancer). They consist of mainly solid tissue...

A primary tumor is a tumor growing at the anatomical site where tumor progression began and proceeded to yield a cancerous mass. Most solid cancers develop...

Bowie (born November 19, 1989), best known by the recording alias Yves Tumor, is an American musician and producer of experimental music, born in Miami...

A papillary tumor is a tumor shaped like a small mushroom, with its stem attached to the epithelial layer (inner lining) of an organ. It consists of papillae...

A Pancoast tumor is a tumor of the apex of the lung. It is a type of lung cancer defined primarily by its location situated at the top end of either the...

Tumor progression is the third and last phase in tumor development. This phase is characterised by increased growth speed and invasiveness of the tumor...

The tumor microenvironment is a complex ecosystem surrounding a tumor, composed of cancer cells, stromal tissue (including blood vessels, immune cells...

Askin's tumor is a rare, primitive neuroectodermal tumor which arises from the soft tissues of the chest wall, particularly of the paravertebral region...

A mastocytoma or mast cell tumor is a type of round-cell tumor consisting of mast cells. It is found in humans and many animal species; it also can refer...

A Krukenberg tumor refers to a malignancy in the ovary that metastasized from a primary site, classically the gastrointestinal tract, although it can...

Tumor necrosis factor (TNF, cachexin, or cachectin; formerly known as tumor necrosis factor alpha or TNF-α) is a cytokine and member of the TNF superfamily...

A splenic tumor is a rare form of tumor that may be malignant or benign. Malignant forms include lymphoma and sarcoma. Lymphoma is the most common malignant...

Ovarian cancer is a cancerous tumor of an ovary. It may originate from the ovary itself or more commonly from communicating nearby structures such as...

Tumor hypoxia is the situation where tumor cells have been deprived of oxygen. As a tumor grows, it rapidly outgrows its blood supply, leaving portions...

neuroma, is a benign tumor that develops on the vestibulocochlear nerve that passes from the inner ear to the brain. The tumor originates when Schwann...