Pseudoachalasia secondary to infiltration of the pillars of the diaphragm by an urotelial tumor: Diagnostic approach with endoscopic ultrasound

1. Rodríguez-Lago, I.
2. de-la-Riva, S.
3. Subtil, J.C.
4. Lozano, M.D.
5. López-Picazo, J.M.
6. Muñoz-Navas, M.