| Among them , forty six cases were immunostained using antibodies against vimentin , CD 34 , muscle specific actin ( MSA ) , smooth muscle actin ( SMA ) , neuron specific enolase ( NSE ) , S 100 protein , synaptophysin ( SYN ) , cytokeratin ( CK ) , CEA , LCA . ^^^ Immunophenotypically , percentage of positivity for the 10 antibodies was as follows : vimentin , 100 % ( 39 / 39 ) , CD 34 , 64 % ( 23 / 36 ) , MSA , 47 % ( 16 / 34 ) , SMA , 41 % ( 14 / 34 ) , NSE , 61 % ( 17 / 28 ) , S 100 protein , 19 % ( 4 / 21 ) , SYN , 15 % ( 3 / 20 ) , CK , CEA , and LCA were negative . ^^^ |