RT Journal Article SR Electronic T1 Unusual cause of dysphagia JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e244694 DO 10.1136/bcr-2021-244694 VO 14 IS 7 A1 Hemanta K Nayak A1 Niraj Kumari A1 Samir Mohindra YR 2021 UL http://casereports.bmj.com/content/14/7/e244694.abstract