Pancreas

Neuroendocrine Tumor

Q: Are pancreatic NETs cancer?

Yes, but they're much slower-growing than the common pancreatic adenocarcinoma. Many patients with PNETs live for years even with metastatic disease. Grade (Ki-67) determines aggressiveness.

Q: What is the difference between PNET and pancreatic cancer?

PNETs arise from hormone-producing cells, are slower-growing, and have much better prognosis. Pancreatic adenocarcinoma (common 'pancreatic cancer') arises from duct cells and is more aggressive. Treatment and outcomes are very different.

Rare tumors arising from hormone-producing cells of the pancreas with variable behavior.

Download PDF

Overview

Pancreatic neuroendocrine tumors (PNETs) arise from islet cells and are much less aggressive than pancreatic adenocarcinoma. They can be functional (producing hormones) or non-functional. Even metastatic PNETs have relatively good prognosis with multimodal treatment.

Causes

Mostly sporadic
MEN1 syndrome (Multiple Endocrine Neoplasia type 1)
Von Hippel-Lindau disease
Tuberous sclerosis
Neurofibromatosis type 1

Risk Factors

MEN1 syndrome
Family history of PNET
Von Hippel-Lindau disease
No known modifiable risk factors

Symptoms

Often asymptomatic (non-functional)

Functional tumors: specific syndromes (insulinoma→hypoglycemia, gastrinoma→ulcers)

Abdominal pain

Weight loss

Jaundice (if head location)

Diarrhea

Flushing

Diagnosis

CT/MRI (hypervascular on arterial phase)
EUS with FNA
Chromogranin A (tumor marker)
Specific hormone levels (insulin, gastrin, etc.)
Ga-68 DOTATATE PET (somatostatin receptor imaging)
Ki-67 index for grading (G1/G2/G3)

Treatment Options

1Surgical resection (enucleation or formal resection)

2Distal pancreatectomy

3Whipple procedure (head tumors)

4Somatostatin analogues (octreotide)

5Targeted therapy (everolimus, sunitinib)

6PRRT (Peptide Receptor Radionuclide Therapy)

Surgical Treatment

Surgery is the only curative treatment for localized PNETs. Small (<2cm), low-grade tumors: enucleation (tumor removal preserving pancreatic tissue). Larger tumors: formal pancreatic resection (distal pancreatectomy or Whipple). Even liver metastases may be resectable. Dr. Bhagat performs parenchyma-sparing approaches when oncologically safe.

Recovery

Enucleation: 4-5 days hospital stay. Formal resection: 5-10 days depending on extent. Long-term follow-up with imaging and chromogranin A. Somatostatin analogues for unresectable disease control symptoms for years.

Prevention

No known prevention for sporadic cases
Genetic screening for MEN1 families
Regular surveillance for known MEN1/VHL patients

Frequently Asked Questions

Are pancreatic NETs cancer?

Yes, but they're much slower-growing than the common pancreatic adenocarcinoma. Many patients with PNETs live for years even with metastatic disease. Grade (Ki-67) determines aggressiveness.

What is the difference between PNET and pancreatic cancer?

PNETs arise from hormone-producing cells, are slower-growing, and have much better prognosis. Pancreatic adenocarcinoma (common 'pancreatic cancer') arises from duct cells and is more aggressive. Treatment and outcomes are very different.

Expert Consultation Available

Get personalized treatment advice from Dr. Bhagat. Book an appointment or connect via WhatsApp for a quick consultation.

Book Appointment WhatsApp Consultation

Surgical Treatment

Frequently Asked Questions

Are pancreatic NETs cancer?

Yes, but they're much slower-growing than the common pancreatic adenocarcinoma. Many patients with PNETs live for years even with metastatic disease. Grade (Ki-67) determines aggressiveness.

What is the difference between PNET and pancreatic cancer?