Written and medically reviewed by: Assoc. Prof. Cengiz Dibekoğlu, MD, General SurgeryLast updated:
Neuroendocrine Tumors (NET)
Neuroendocrine tumors vary from indolent to aggressive NEC — grade and differentiation change how treatment is planned.
NETs secrete or silently grow along the gut and pancreas with a wide biological spectrum. Grade (Ki-67/mitoses) and differentiation separate relatively indolent NETs from high-grade neuroendocrine carcinomas that need different chemotherapy mindsets. Functional syndromes (carcinoid, insulinoma, etc.) add hormone-control tasks to tumor control tasks. These tumors follow sarcoma or neuroendocrine rules, not generic adenocarcinoma pathways. Bring your top three questions to the visit.
Educational schematic. Some structures may be simplified or emphasized for clarity; not an exact anatomical depiction.
© Cengiz Dibekoğlu — illustrative; not for unauthorized use
Figure summary
This educational figure shows: NET.
Who may be a candidate?
- International patients preparing a structured second-opinion visit
- Patients comparing observation, medical care, and procedural options
Possible advantages
- Supports informed consent with alternatives and recovery themes
- Highlights red flags that should trigger urgent contact
Limits & realistic expectations
- Cannot replace examination, imaging, or pathology
- Local protocols and tumor-board decisions may refine timing
- Outcomes vary with anatomy, stage, and comorbidity
Step-by-step overview
- 1
Clarify the clinical question
What diagnosis is being confirmed and what decision follows?
- 2
Choose first-line tests
Start with the test that answers the leading question safely.
- 3
Stage if needed
Add imaging or endoscopy when results would change management.
- 4
Name limitations
No test replaces exam; false reassurance is a risk.
- 5
Link to next step
Diagnosis should point to observation, medical care, or procedure.
Key points
- Key note inside
Important
This page is for education. It is not medical advice and does not replace a visit with your physician.
Frequently asked questions
What is the difference between NET and NEC?
Grade and differentiation separate relatively indolent NETs from aggressive neuroendocrine carcinomas with different treatments.
Do all NETs produce hormones?
No. Functional and non-functional tumors are managed differently.
Why is Ki-67 important?
It helps grade the tumor and shapes therapy intensity.
Is surgery always first?
Not for every stage; systemic and liver-directed options appear in selected algorithms.
More chapters in this hub
Appointment / info
This page is for education. It is not medical advice and does not replace a visit with your physician.
Medical editor: Assoc. Prof. Cengiz Dibekoğlu, MD · Last medically reviewed: August 2026 · English patient-education chapter.