Duodenal duplication cyst presenting with gastric outlet obstruction in an adult male

Duodenal duplication cyst extending into the posterior mediastinum

“…A recent meta-analysis between 1998 and 2009 reported a total of 47 cases of duodenal duplication cysts [1,11] . Clasically, they are located in the second or the third parts of duodenum and share a common wall, communicating with the duodenal lumen in 25% of cases [6,7] . They can be cystic or tubular, communicating or non-communicating, but the most common type is cystic and non-communicating.…”

“…Although duplication cysts can be seen at any level of alimentary tract from mouth to anus, with varying types,shapes and sizes; they mostly appear in distal ileum, followed by the esophagus, colon and jejunum [2,4,5] . They are usually located in the second or the third parts of duodenum, communicating with duodenal lumen in 25% of cases [6,7] . However, any cases of duodenal duplication cysts extending into the posterior mediastinum were not reported in the literature.…”