( ( Some ( kidney stones ) ) ( ( ( ( cause pain ) and ) ( must ( be ( removed ( from ( ( the body ) ( using ( surgery ( or ( ultrasound techniques ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT Some) (NN kidney) (NNS stones)) (VP (VP (VBP cause) (NP (NN pain))) (CC and) (VP (MD must) (VP (VB be) (VP (VBN removed) (PP (IN from) (NP (NP (DT the) (NN body)) (VP (VBG using) (NP (NN surgery) (CC or) (NN ultrasound) (NNS techniques))))))))) (. .)))
Some kidney stones cause pain and must be removed from the body using surgery or ultrasound techniques.
(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))) (. .)))