( ( ( Most infants ) ( with ( choledochal cysts ) ) ) ( ( ( ( have ( ( ( ( complete or ) near ) ( complete obstruction ) ) ( at ( ( the level ) ( of duodenum ) ) ) ) ) , ) ( whereas ( ( older patients ) ( have ( patent ( distal ( common duct ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (JJS Most) (NNS infants)) (PP (IN with) (NP (JJ choledochal) (NNS cysts)))) (VP (VBP have) (NP (NP (ADJP (JJ complete) (CC or) (JJ near)) (JJ complete) (NN obstruction)) (PP (IN at) (NP (NP (DT the) (NN level)) (PP (IN of) (NP (NN duodenum)))))) (, ,) (SBAR (IN whereas) (S (NP (JJR older) (NNS patients)) (VP (VBP have) (NP (JJ patent) (JJ distal) (JJ common) (NN duct)))))) (. .)))
Most infants with choledochal cysts have complete or near complete obstruction at the level of duodenum, whereas older patients have patent distal common duct.
(ROOT (S (NP (JJS Most) (NNS digestion)) (VP (VBZ is) (VP (VBN completed) (PP (IN in) (NP (DT the) (NN duodenum))))) (. .)))