On [**2781-9-17**], a lumbar puncture was performed which was negative for malignant cells.
 Patient has metastases to the spine
(ROOT (FRAG (SBAR (IN On) (SINV (-LRB- -LSB-) (NP (NP (SYM **) (CD 2781-9-17) (X (SYM **)) (-RRB- -RSB-)) (, ,) (S (NP (DT a) (JJ lumbar) (NN puncture)) (VP (VBD was) (VP (VBN performed) (SBAR (WHNP (WDT which)) (S (VP (VBD was) (ADJP (JJ negative) (PP (IN for) (NP (JJ malignant) (NNS cells))))))))))))) (. .)))
(ROOT (S (NP (NN Patient)) (VP (VBZ has) (NP (NP (NNS metastases)) (PP (TO to) (NP (DT the) (NN spine)))))))
( ( On ( -LSB- ( ( ( ** ( ( 2781-9-17 ** ) -RSB- ) ) , ) ( ( a ( lumbar puncture ) ) ( was ( performed ( which ( was ( negative ( for ( malignant cells ) ) ) ) ) ) ) ) ) ) ) . )
( Patient ( has ( metastases ( to ( the spine ) ) ) ) )