( ( ( Congenital absence ) ( of ( ( the vas ) ( -LRB- ( ( the ( sperm-carrying tube ) ) -RRB- ) ) ) ) ) ( ( For ( ( ( ( patients ( without ( a ( vas deferens ) ) ) ) ( -LRB- ( ( ( a problem ) ( ( ( ( they ( are ( born with ) ) ) , ) but ) ( which ( is ( ( diagnosed ( only ( much later ) ) ) on ) ) ) ) ) -RRB- ) ) ) , ) ( ( the ( conventional treatment ) ) ( in ( the past ) ) ) ) ) ( ( ( ( consisted ( of ( ( creating ( a pouch ) ) surgically ) ) ) , ) ( into ( which ( ( the epididymis ) ( was ( made ( to open ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (NP (JJ Congenital) (NN absence)) (PP (IN of) (NP (NP (DT the) (NN vas)) (PRN (-LRB- -LRB-) (NP (DT the) (JJ sperm-carrying) (NN tube)) (-RRB- -RRB-))))) (PP (IN For) (NP (NP (NP (NNS patients)) (PRN (PP (IN without) (NP (DT a) (NN vas) (NNS deferens)))) (PRN (-LRB- -LRB-) (NP (NP (DT a) (NN problem)) (SBAR (SBAR (S (NP (PRP they)) (VP (VBP are) (VP (VBN born) (PP (IN with)))))) (, ,) (CC but) (SBAR (WHNP (WDT which)) (S (VP (VBZ is) (VP (VBN diagnosed) (ADVP (RB only) (RB much) (RB later)) (PP (IN on)))))))) (-RRB- -RRB-))) (, ,) (NP (NP (DT the) (JJ conventional) (NN treatment)) (PP (IN in) (NP (DT the) (NN past)))))) (VP (VBD consisted) (PP (IN of) (S (VP (VBG creating) (NP (DT a) (NN pouch)) (ADVP (RB surgically))))) (, ,) (PP (IN into) (SBAR (WHNP (WDT which)) (S (NP (DT the) (NNS epididymis)) (VP (VBD was) (VP (VBN made) (S (VP (TO to) (VP (VB open)))))))))) (. .)))
Congenital absence of the vas (the sperm-carrying tube) For patients without a vas deferens (a problem they are born with, but which is diagnosed only much later on), the conventional treatment in the past consisted of creating a pouch surgically, into which the epididymis was made to open.
(ROOT (S (NP (DT A) (NN vas) (NNS deferens)) (VP (VBZ is) (NP (NP (DT the) (NN name)) (PP (IN of) (NP (NP (DT the) (NN tube)) (SBAR (WHNP (WDT that)) (S (VP (VBZ carries) (NP (NN sperm)) (PP (IN from) (NP (NP (DT the) (NNS epididymis)) (PP (TO to) (NP (DT the) (NN urethra)))))))))))) (. .)))