Patient 50 years ago underwent esophagectomy for lye ingestion 50 years ago. A right colonic interposition surgery was performed. So you see food traverses hypopharynx to right colon in thorax to stomach-duodenum-jejunum-ileum transverse colon-left colon.

Cecum is usually attached to transverse colon as a blind loop.

The right colon is reversed and the ileo cecal valve area is attached proximally to oesopahgus acting as a valve.

Usually esophagectomy is performed to reduce risk for cancer.