Tumors of the small intestine are rare, malignant tumors, and account for about 0.5 to 1% of all digestive tract tumors. Adenocarcinomas are the most common, followed by malignant lymphomas and melanomas, which are very rare. They can be solitary or multiple, primary or secondary.
The etiology is unknown. They appear more often in certain precancerous conditions and lesions.
It is based on anamnesis, clinical presentation, physical examination, laboratory tests, radiological findings, abdominal ultrasound, endoscopy, CT scan, biopsy and histological findings.
Treatment of malignant tumors of the small intestine is surgical. Bowel resection is applied.