How is a nonfunctional neuroendocrine tumor diagnosed?

John A. Chabot
Endocrinology Diabetes & Metabolism

The most common diagnostic tests employed for these tumors are CT scans, octreotide scans, and pancreatic polypeptide/chromogranin level tests. CT scans are most often used to evaluate the tumor in order to demonstrate its location within the pancreas and screen for spread of the disease to the liver. Octreotide scans are performed preoperatively to identify visible tumors and again postoperatively to screen for recurrence of disease. Octreotide scanning involves injection of radioisotope into a vein, and subsequent scanning to identify sites of concentration. Because blood levels of pancreatic polypeptide and chromogranin are elevated in approximately 90% of patients with nonfunctional neuroendocrine tumors, physicians monitor these levels to evaluate patients for recurrence of disease as well.

Continue Learning about Endocrine System

Endocrine System

Your endocrine system works with your nervous system to control important bodily functions. The endocrine systems responsibilities include regulating growth, sexual development and function, metabolism and mood. The endocrine syst...

em also helps give your body the energy it needs to function properly. Endocrine glands secrete hormones into the bloodstream. Hormones are considered chemical messengers, coordinating your body by transferring information from one set of cells to another. Your endocrine system health can be affected by hormone imbalances resulting from impaired glands. A hormone imbalance can cause problems with bodily growth, sexual development, metabolism and other bodily functions. Endocrine system diseases or conditions include diabetes, growth disorders and osteoporosis.

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