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Gastrointestinal stromal tumors ( GISTs) are the most common mesenchymal neoplasms of the gastrointestinal tract. GISTs arise in the smooth muscle pacemaker interstitial cell of Cajal, or similar cells. [ 2] They are defined as tumors whose behavior is driven by mutations in the KIT gene (85%), [ 2] PDGFRA gene (10%), [ 2] or BRAF kinase (rare).
A brain tumor occurs when abnormal cells form within the brain. [ 2] There are two main types of tumors: malignant (cancerous) tumors and benign (non-cancerous) tumors. [ 2] These can be further classified as primary tumors, which start within the brain, and secondary tumors, which most commonly have spread from tumors located outside the brain ...
Adenocarcinoma of the lung is the most common type of lung cancer, and like other forms of lung cancer, it is characterized by distinct cellular and molecular features. [ 1] It is classified as one of several non-small cell lung cancers (NSCLC), to distinguish it from small cell lung cancer which has a different behavior and prognosis.
For example, imaging of prostate tumors is better accomplished using T2-MRI and DWI-MRI than T2-weighted imaging alone. [7] The number of applications of mpMRI for detecting disease in various organs continues to expand, including liver studies, breast tumors, pancreatic tumors, and assessing the effects of vascular disruption agents on cancer ...
Non-small cell lung cancer is a common type of lung cancer that is often diagnosed with a physical exam, blood tests, imaging studies, procedures, and biopsies.
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 right or left lung. It typically spreads to nearby tissues such as the ribs and vertebrae. Most Pancoast tumors are non-small-cell lung cancers . The growing tumor can cause compression of many ...
PanNETs are a type of neuroendocrine tumor, representing about one-third of gastroenteropancreatic neuroendocrine tumors (GEP-NETs). Many PanNETs are benign, while some are malignant. Aggressive PanNET tumors have traditionally been termed "islet cell carcinoma". PanNETs are quite distinct from the usual form of pancreatic cancer, the majority ...
Specialty. Oncology, neurology. A central nervous system tumor ( CNS tumor) is an abnormal growth of cells from the tissues of the brain or spinal cord. [ 1] CNS tumor is a generic term encompassing over 120 distinct tumor types. [ 2] Common symptoms of CNS tumors include vomiting, headache, changes in vision, nausea, and seizures. [ 3]