Sigmoid megaesophagus as clinical presentation of achalasia Roser Termes; Dulce Momblán; Víctor E. Gonzabay; Antonio M. Lacy;

Biliopancreatic Limb Obstruction Due to Jejuno-jejunal Intussusception in a Patient With Previous Roux-en-Y Gastric Bypass Pol Guarner; Ainitze Ibarzabal; Jose M. Balibrea; Antonio M. Lacy;