What does rectal neuroendocrine tumor mean?

Rectal neuroendocrine tumor is a rare tumor that originates from neuroendocrine cells in the rectum.

The etiology of rectal neuroendocrine tumor is unknown. It is generally related to genetic, dietary, and environmental factors and can be divided into two types: low-grade and high-grade malignant. Common symptoms include abdominal pain, diarrhea, hematochezia, intestinal obstruction, nausea, vomiting, and weight loss

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