Frequently they are smaller than 1 cm and immunohistochemistry shows that they are positive for glucagon 29, glucagon 37, fragments of proglucagon, PYY, and PP.
Frecuentemente son menores a 1 cm y la inmunohistoquímica los muestra positivos para glucagón 29, glucagón 37, fragmentos de proglucagón, PYY, PP.