4Dahl EV,Waugh JM,Dahlin DC.Gastrointestinal ganglioneuromas:brief review with report of a duodenal ganglioneuroma.Am J Pathol,l957,33:953.
5Taylor HB,Helwig EB.Benign nonchromaffin paragangliomas of the duodenum.Virchows Arch A Pathol Anat Histopathol,1962,335:356.
6Kepes JJ,Zacharias DL.Gangliocytic paragangliomas of the duode-num.A report of two cases with light and electron microscopic exami-nation.Cancer,1971,27:61.
7Okubo Y,Wakayama M,Nemoto T,et al.Literature survey on epide-miology and pathology of gangliocytic paraganglioma.BMC Cancer,2011,11:187.
9Rowsell C,Coburn N,Chetty R.Gangliocytic paraganglioma:a rare case with metastases of all 3 elements to liver and lymph nodes.Ann Diagn Pathol,2010,30.
10Castoldi L,DeRai P,Marini A,et al.Neurofibromatosis-1 and ampul-lary gangliocytic paraganglioma causing biliary and pancreatic ob-struction.Int J Pancreatol,2001,29:93.