Retrorectal cystic hamartoma as benign cause of CA 19-9 elevation

1. Garcia-Donas, J.
2. Rodriguez, N.
3. Jara, C.
4. Urioste, M.
5. Nevado, M.
6. Cañamero, M.
7. Cuartero, V.
8. Albillos, J.
9. Vega, D.
10. Quintans, A.