( ( ( DISCUSSION Options ) ( for ( ( the treatment ) ( of PD ) ) ) ) ( ( ( have generally ) ( been ( limited ( to ( ( ( ( ( ( ( ( ( observation , ) ultrasound ) , ) radiation ) , ) surgery ) , ) and ) ( medical treatment ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP DISCUSSION) (NNPS Options)) (PP (IN for) (NP (NP (DT the) (NN treatment)) (PP (IN of) (NP (NNP PD)))))) (VP (VBP have) (ADVP (RB generally)) (VP (VBN been) (VP (VBN limited) (PP (TO to) (NP (NP (NN observation)) (, ,) (NP (NN ultrasound)) (, ,) (NP (NN radiation)) (, ,) (NP (NN surgery)) (, ,) (CC and) (NP (JJ medical) (NN treatment))))))) (. .)))
DISCUSSION Options for the treatment of PD have generally been limited to observation, ultrasound, radiation, surgery, and medical treatment.
(ROOT (S (NP (DT The) (NN option) (S (VP (TO to) (VP (VB remove) (S (NP (NN kidney) (NNS stones)) (ADJP (JJ other) (PP (IN than) (NP (NN surgery))))))))) (VP (VBZ is) (NP (NN ultrasound) (NNS treatments))) (. .)))