Matthews T H, Heaton G E, Christopherson W M
Arch Pathol Lab Med. 1986 Jun;110(6):550-2.
We report a case of nongestational extragenital choriocarcinoma arising in the duodenum of a 29-year-old woman. Immunohistochemical stains of the tumor were positive for human chorionic gonadotropin and human placental lactogen.