Primary malignant mucosal tumours of the small bowel.

Three cases of primary malignant tumours in the small bowel are presented. The authors discuss the clinical symptoms of these patients and describe the radiological picture. Adenocarcinoma most frequently occurs in the proximal small bowel. Radiologists should be aware of the dominant site of occurrence of these tumors when performing a small bowel investigation, because lesions in the jejunum may easily be overlooked due to superposition.