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Small Bowel Metastasis of Osteosarcoma Presenting with Intussusception: A Case Report
Wataru Otsu1, Yuki Shitomi1, Shigeo Ninomiya1
1Department of Gastroenterological and Pediatric Surgery, Oita University Faculty of Medicine, Yufu, Oita, Japan.
Surgical Case Reports
|June 18, 2026
Summary
Extrapulmonary metastasis of osteosarcoma to the small bowel is rare. This case highlights small bowel intussusception as a presentation, emphasizing the need for consideration in osteosarcoma patients with abdominal symptoms.
Area of Science:
- Oncology
- Gastroenterology
- Surgical Pathology
Background:
- Osteosarcoma is the most common primary bone malignancy in pediatric and young adult populations.
- Pulmonary metastasis is frequent; however, extrapulmonary sites, such as the gastrointestinal tract, are uncommon.
- This report details a rare instance of osteosarcoma metastasis to the small intestine, manifesting as intussusception.
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