title: Endoscopic "string sign".
authors.affiliation: Endoscopy Unit, Hospital de León. León, Spain. espinel.jesus@gmail.com.
authors.forename: Jesus
authors.initials: J
authors.lastname: Espinel
authors.forename: Eugenia
authors.initials: E
authors.lastname: Pinedo
authors.forename: Gabriela
authors.initials: G
authors.lastname: Rascarachi
authors.forename: Vanesa
authors.initials: V
authors.lastname: Ojeda
mesh_terms: D002288:Adenocarcinoma, Mucinous / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D000368:Aged; D001706:Biopsy; D002285:Carcinoma, Intraductal, Noninfiltrating / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D021441:Carcinoma, Pancreatic Ductal / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D002291:Carcinoma, Papillary / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D003937:Diagnosis, Differential; D004384:Duodenoscopy; D019160:Endosonography; D005260:Female; D006801:Humans; D010190:Pancreatic Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery