The overall accuracy of combining onsite cytology with Papanicolaou-stain cytology and histology was not significantly different for the FNB ( n = 58 ) and FNA ( n = 58 ) groups ( 98.3 % [ 95 % CI 94.9 % -100 % ] vs. 94.8 % [ 95 % CI 91.9 % -100 % ] ; P = 0.671 ) .