( ( Some ( kidney stones ) ) ( ( ( show up ) ( on ( an ( ultrasound scan ) ) ) ) . ) )
(ROOT (S (NP (DT Some) (NN kidney) (NNS stones)) (VP (VBP show) (PRT (RP up)) (PP (IN on) (NP (DT an) (NN ultrasound) (NN scan)))) (. .)))
Some kidney stones show up on an ultrasound scan.
(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))) (. .)))