Cancerous (malignant) tumors in the small intestine are very uncommon, occurring in about 9,000 people in the United States each year. Adenocarcinoma is the most common type of cancer of the small intestine. Adenocarcinomas develop in the glandular cells of the lining of the small intestine. People with Crohn disease of the small intestine are more likely than others to develop adenocarcinoma.
Test Overview. A brain natriuretic peptide (BNP) test measures the amount of the BNP hormone in your blood. BNP is made by your heart and shows how well your heart is working. Normally, only a low amount of BNP is found in your blood.
Both substances are secreted in response to changes in pressure that occur with heart failure. BNP and NT-pro-BNP levels in the blood increase when heart failure symptoms worsen, and decrease when the heart failure condition is stable. The test is able to detect heart failure over 80% of the time.BNP and NT-pro-BNP levels in a person with heart failure -- even someone whose condition is stable -- are higher than in a person with normal heart function.uring a BNP blood test, a small amount of blood is taken and placed in a machine that detects the level of BNP and NT-pro-BNP. The test takes about 15 minutes. In some places, the blood sample needs to be sent off site to a lab to be tested.