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Updated: Apr 12, 2026

Robotic Enucleation of an Intra-Pancreatic Insulinoma in the Pancreatic Head
Published on: January 3, 2020
Giant malignant insulinoma
Dimitrios Karavias1, Ioannis Habeos2, Ioannis Maroulis1
1Department of Surgery, University Hospital of Patras, Rion, Greece.
Malignant insulinomas, though rare, can be large and aggressive. This case highlights a 17-cm malignant insulinoma with extensive metastasis, emphasizing the need for thorough diagnostic evaluation and surgical management.
Area of Science:
- Endocrinology
- Oncology
- Surgical Pathology
Background:
- Insulinomas, the most common pancreatic neuroendocrine tumors, are typically benign and small.
- Malignancy is rare and usually associated with larger tumor size.
Observation:
- A 75-year-old woman presented with an acute hypoglycemic episode.
- Diagnostic work-up revealed a large, 17-cm malignant insulinoma.
Findings:
- The malignant insulinoma demonstrated local invasion to the left kidney.
- Metastasis was observed in regional lymph nodes and the liver.
- The patient experienced symptoms of hypoglycemia relieved by glucose administration.
Implications:
- Large malignant insulinomas require comprehensive diagnostic and imaging evaluation.
- Surgical management of both primary and metastatic disease is crucial for patient outcomes.
- This case underscores the importance of considering malignancy in large insulinomas presenting with hypoglycemia.
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