Abstract
A 52-year-old man who had been followed for gastric ulcer was found to have a submucosal tumor 10mm in diameter at the papilla of Vater on upper gastrointestinal endoscopy and endoscopic ultrasonography. During a 7 year-follow-up period by endoscopic ultrasonography, the size of the submucosal tumor increased from 10mm to 30mm in diameter. No apparent lymph node metastasis was detected on an abdominal dynamic-CT scan. Based on these findings, transduodenal extirpation of the tumor was perfomed with a diagnosis of submucosal tumor of the papilla of Vater. Histologically epithelioid cells, ganglion like cells, and spindle cells were seen. The tumor was finally diagnosed as gagliocytic paraganglioma. We describe the clinical experience of the present case and review the relevant medical literature.
