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Primary mesenteric neuroendocrine tumor that changed its internal composition from cystic to solid: a case report
Akira Yasuda1, Hidehiko Kitagami2, Yasuhiro Kondo1
1Department of Surgery, Kariya Toyota General Hospital, 5-15, Sumiyoshi-cho, Kariya, Aichi, 448-8505, Japan.
Clinical Journal of Gastroenterology
|December 29, 2016
Summary
A rare primary mesenteric neuroendocrine tumor presented as a cystic lesion that evolved into a solid mass. This case highlights the importance of monitoring such tumors, even when initially appearing benign.
Area of Science:
- Gastroenterology
- Oncology
- Radiology
Background:
- Primary mesenteric neuroendocrine tumors are rare, often confused with metastases.
- Neuroendocrine tumors (NETs) can exhibit diverse presentations and growth patterns.
Observation:
- A 72-year-old male presented with epigastralgia and a 25-mm cystic lesion near the terminal duodenum.
- Over two years, the lesion grew to 40 mm, transforming from cystic to solid.
- Fluorodeoxyglucose positron emission tomography (FDG-PET) showed positive findings.
Findings:
- A solid tumor was surgically removed from the jejunal mesentery.
- Histopathological and immunohistochemical examination confirmed a low-grade neuroendocrine tumor.
- The patient remained recurrence-free one year post-operation.
Implications:
- This case underscores the potential for mesenteric neuroendocrine tumors to change in composition over time.
- Early detection and surgical intervention are crucial for favorable outcomes.
- Further research into the natural history and imaging characteristics of primary mesenteric NETs is warranted.
