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[Non-functional islet-cell tumor: analysis of 237 cases]
Zhiying Yang1, Ping Zhao, Zhan Liu
1Department of General Surgery, Peking Union Medical College Hospital, Beijing 100730, China.
Zhonghua Yi Xue Za Zhi
|April 16, 2002
Summary
Nonfunctional islet-cell tumors (NITs) are rare and more common in women. While difficult to diagnose preoperatively, malignant NITs have a favorable prognosis with active treatment.
Area of Science:
- Endocrinology
- Surgical Oncology
Context:
- Nonfunctional islet-cell tumors (NITs) are rare neoplasms arising from pancreatic islet cells.
- These tumors lack hormone hypersecretion, making clinical presentation often non-specific.
Purpose:
- To review and synthesize the clinical characteristics of NITs based on Chinese literature.
- To analyze epidemiological data, clinical manifestations, diagnostic challenges, and treatment outcomes.
Summary:
- A review of 60 articles identified 237 NIT cases, predominantly in females (2.9:1 ratio).
- Abdominal mass was the most frequent symptom. Preoperative diagnosis and differentiation from other masses were challenging.
- The malignancy rate was 35%, with a 5-year survival of 53.1% for malignant cases.
Impact:
- Highlights the diagnostic difficulties associated with NITs.
- Emphasizes the favorable prognosis of malignant NITs with appropriate management.
- Underscores the need for increased awareness and active treatment strategies for NITs.