![]() Biopsy to remove a sample of tissue or fluid from the tumor to be tested and analyzed. Neuroendocrine tumors (NETs) are heterogeneous neoplasms that originate from cells with a secretory function.Images are taken 4 hours after injection with the radiotracer, again 24 hour later, and possibly 48 hours after the injection. The tracer finds neuroendocrine cells that have receptors for somatostatin, a growth hormone, causing them to appear on images taken with a gamma camera. Octreoscan (somatostatin receptor scintigraphy) uses a radioactive tracer called In-octeotride.However, because many neuroendocrine tumors grow slowly, they do not consume the glucose very quickly and may not appear distinctly bright. Active cells take up more of the glucose and appear brighter on the scan. First, you would receive an injection of a radiolabeled glucose solution. Positron Emission Tomography/Computed Tomography (PET/CT) is often used to depict active cancer cells.NetSpot® Scan (gallium-68 dotatate) is the latest imaging innovation that uses a radiotracer agent instead of glucose for a positron emission tomography (PET) scan and can detect small lesions and early-stage NETs significantly better than other imaging.Imaging tests such as CT, MRI, ultrasound and echocardiogram, endoscopic ultrasound, bronchoscopy, esophagogastroduodenoscopy and colonoscopy.Biochemical tests to measure certain substances and hormones. ![]() Urine tests to assess kidney function and 5-HIAA biomarker. ![]()
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