Subject(s)

Opioid-Related Disorders/complications , Opium , Sphincter of Oddi Dysfunction/etiology , Sphincter of Oddi/pathology , Abdominal Pain/etiology , Aged , Cholangiopancreatography, Endoscopic Retrograde , Endosonography , Humans , Hypertrophy , Male , Sphincter of Oddi/diagnostic imaging , Sphincter of Oddi/surgery , Sphincter of Oddi Dysfunction/diagnostic imaging , Sphincter of Oddi Dysfunction/surgery , Sphincterotomy, Endoscopic