Statistics from Altmetric.com
Cell block immunohistochemistry (IHC) and other molecular studies are often required to fully characterise tumours diagnosed by fine needle aspiration (FNA) cytology. These supplementary investigations are best done on cell blocks. We describe a device that allows cell blocks to be collected while performing FNAs with little extra effort or reduction in the quality of the cytology smear specimen. Experienced FNA operators will recognise that often a significant amount of the sample is left behind in the hub of the needle when the specimen is ejected on the slides (figure 1A).