> as lemmas

1895 Times & Reg. (U.S.) 15 June 488/1 He dilates on the great difficulties in the way of exploring the bile passages in malignant disease, particularly the retro-duodenal or retro-pancreatic regions.

1936 Proc. Amer. Philos. Soc. 76 63 The caudate element of the Spigelian complex is very long,..occupying the retroduodenal space—in those primates (lemurs and platyrrhines) in which a mesoduodenum persists.

2009 Gastrointestinal Endoscopy 69 476/1 The retroduodenal perforation, diagnosed after the procedure was successfully completed, was managed with conservative treatment.