The following are being done only for research purposes; prior to performing the FNA, The patient will be randomized to one of the three commercially available FNA needles. At this time, all needles are considered equivalent and there is no medical necessity to pick one over another. The sample obtained by the needle will be assigned a quality score based on certain parameters of the sample such as the abundance of diagnostic cells and the presence of blood. We are going to collect certain information about your procedure such as the complications of the procedure, number of needle passes and final diagnosis.