Introduction: Malignant tumors of the small bowel are relatively uncommon neoplasms; their incidence is around 1.5 per 100,000 inhabitants in the Czech Republic.
Method: 104 patients underwent a resection of the small bowel because of a primary or secondary tumor over the 10-year period between 20062015 at the Masaryk Memorial Cancer Institute. Data from these patients was reviewed retrospectively. Survival rates were analyzed using the Kaplan-Meier method.
Results: We observed 45 primary and 59 secondary tumors. The group of primary malignancies included 12 adenocarcinomas, 14 cases of GIST and 19 cases of NET. Neuroendocrine tumors showed the best prognosis with a 62% probability of five-year survival. Patients with gastrointestinal stromal tumors had a 39% probability of five-year survival and those with adenocarcinomas had a 32% probability of five-year survival. Secondary tumors were caused mostly by metastatic colorectal carcinoma (22 times), malignant melanoma (11 times) and ovarian cancer (10 times). The probability of five-year survival was 15% in the group of secondary tumors.
Conclusion: Malignant tumors of the small intestine are rare, but their incidence has increased in the last decades. The main prognostic factors include advancement of the tumor and radicality of surgical resection.Key words: small bowel tumors - adenocarcinoma - sarcoma - NET - GIST - lymphoma.
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