Gastrointestinal stromal tumor
(Redirected from Plexosarcoma)
Gastrointestinal stromal tumor (GIST) is a type of tumor that occurs in the gastrointestinal tract, specifically in the stomach and small intestine. GISTs are rare, but they are the most common mesenchymal neoplasms of the gastrointestinal tract. They originate from the interstitial cells of Cajal (ICC) or from stem cells that can differentiate into ICC.
Symptoms[edit | edit source]
The symptoms of GIST vary depending on the size and location of the tumor. Some people with GIST have no symptoms, and the tumor is discovered incidentally during an examination or procedure for another condition. When symptoms do occur, they may include abdominal pain, nausea, vomiting, bleeding in the digestive tract, anemia, and a mass in the abdomen.
Diagnosis[edit | edit source]
Diagnosis of GIST typically involves a combination of medical history, physical examination, imaging studies, and biopsy. Imaging studies such as computed tomography (CT) scan, magnetic resonance imaging (MRI), and positron emission tomography (PET) scan can help to identify the location and size of the tumor. Biopsy, in which a sample of the tumor is removed for examination under a microscope, is used to confirm the diagnosis.
Treatment[edit | edit source]
Treatment for GIST depends on the size, location, and aggressiveness of the tumor, as well as the patient's overall health. Options may include surgery, targeted therapy, radiation therapy, and chemotherapy. Surgery is the primary treatment for localized GIST. Targeted therapy with drugs such as imatinib (Gleevec) and sunitinib (Sutent) is used for advanced or metastatic GIST.
Prognosis[edit | edit source]
The prognosis for GIST varies widely depending on the size and location of the tumor, the patient's age and overall health, and the specific genetic mutations present in the tumor. In general, smaller tumors that are detected early and can be completely removed surgically have a better prognosis.
See also[edit | edit source]
| Gastrointestinal stromal tumor Resources | |
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