Abstract
To investigate the diagnostic utility of fine needle aspiration (FNA) smear, cell block (CB), flow cytometry (FC) and tuberculosis polymerase chain reaction (Tb-PCR) analysis for Kikuchi's disease (KD). A total of 173 FNA biopsy samples were collected using a Youyi aspirator. KD was diagnosed by FNA smear, with or without, CB, FC and Tb-PCR. Out of 173 patients, 131 (75.7%) were female and 126 (72.8%) aged 21-40years. Of these, 171 patients (98.8%) presented with painful enlarged cervical lymph nodes. All cytological samples identified intracellular apoptotic debris embedded in the cytoplasm of crescentic and phagocytic macrophages. In 24 cell-blocks (CBs), clusters of CD123 positive plasmacytoid monocytes were observed in KD. FC and CBs showed non-specific lymphoid hyperplasia in nine cases with suspicious lymphoma. Tb-PCR was negative in five cases with suspicion of tuberculosis. In summary, FNA biopsy is a fast, reliable, and relatively inexpensive diagnosis tool for KD. CB preparation is an important adjunct method for the diagnosis of KD.
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