Objective To explore the clinical characteristics and diagnosis of primary small intestinal tumor(PSIT). Methods Retrospective analysis of the clinical and pathological data of the 31 PSIT cases was made. Results Duodenum was the most common site 67.74% for PSIT. The confirmed diagnosis rate was 54.84%(17/31)(duodenum was 66.67%,14/21; ileum and jejunum was 30%, 3/10, respectively ). 3 cases were benign tumors and 28 were malignant tumors.The adenocarcinoma was the most frequently seen malignant PSIT followed by lymphoma and often in duodenal. The features of the small intestinal tumor could be abdominal pain,abdominal mass,hemorrhage,obstruction,jaundice and fever.The chief method for diagnose was barium meal X-ray examination, especially with the hypotonic contrast X-ray examination and endoscopy.Superior mesenteric arteriography sometimes helped in determing site of gastrointestinal haemorrhage. CT scan could be helpful in diagnosis. Conclusion Duodenal adenocarcinoma is most common PSIT,followed by malignant lymphoma.Endoscopy is the best way to find out the tumor located in duodenum and hypotonic contrast X-ray examination is effective in diagnosis and locating of small bowl tumors.Superior mesenteric arteriography is a good way to find out angioma and leiomyoma. CT scanning are also helpful.

Objective:In order to obtain more effective endoscopic treatment,we analysed 32 cases data of therapeutic ERCP.Methods:Of which 23 were males,9 females with a median age of 56 years.Therapeutic effort was executed in all cases including biliary drainage (n=16)，endoscopic sphincterotomy (EST) (n=15,10 of them received extraction)and extract ascaris(n=1).The discussion focus on the treatment of biliary disease.Results:All common bile-duct stone were cleared up.Satisfactory treatment was achieved in almost all with no severe side effect.Conclusions:Therapeutic ERCP is an effective method for cholangiopancreatic diseases.It is of considerable value and should be promoted in clinical application.