( ( ( Polycystic ( ovarian syndrome ) ) ( is ( ( a ( common ( hormonal disorder ) ) ) ( that ( ( is poorly ) ( ( understood and ) clinically ) ) ) ) ) ) ( ( ( characterized ( by irregular ) ) ( ( ( menstrual cycles ) , ) ( lack ( of ( ( ( ( ( ( ( ( ( regular ovulation ) , ) ( abnormal ( facial ( hair growth ) ) ) ) , ) infertility ) , ) obesity ) and ) ( ( polycystic ovaries ) ( -LRB- ( ( ( enlarged , ) ( cystic ovaries ) ) -RRB- ) ) ) ) ) ) ) ) . ) )
(ROOT (SINV (S (NP (JJ Polycystic) (NN ovarian) (NN syndrome)) (VP (VBZ is) (NP (NP (DT a) (JJ common) (JJ hormonal) (NN disorder)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (ADVP (RB poorly)) (VP (VBN understood) (CC and) (VBN clinically)))))))) (VP (VBD characterized) (PP (IN by) (NP (NN irregular)))) (NP (NP (JJ menstrual) (NNS cycles)) (, ,) (NP (NP (NN lack)) (PP (IN of) (NP (NP (JJ regular) (NN ovulation)) (, ,) (NP (JJ abnormal) (JJ facial) (NN hair) (NN growth)) (, ,) (NP (NN infertility)) (, ,) (NP (NN obesity)) (CC and) (NP (NP (JJ polycystic) (NNS ovaries)) (PRN (-LRB- -LRB-) (NP (NNP enlarged)) (, ,) (NP (JJ cystic) (NNS ovaries)) (-RRB- -RRB-))))))) (. .)))
Polycystic ovarian syndrome is a common hormonal disorder that is poorly understood and clinically characterized by irregular menstrual cycles, lack of regular ovulation, abnormal facial hair growth, infertility, obesity and polycystic ovaries (enlarged, cystic ovaries).
(ROOT (S (NP (NNP Ovulation)) (VP (VP (VBZ takes) (NP (NN place)) (PP (IN in) (NP (DT the) (NN ovary)))) (CC and) (VP (VBZ is) (NP (NP (NN part)) (PP (IN of) (NP (DT the) (JJ menstrual) (NN cycle)))))) (. .)))