Aspiration cytology of retinoblastoma: light and electron microscopic correlations.


A series of 16 cases of retinoblastoma diagnosed by fine-needle aspiration biopsy (FNAB) and confirmed by histologic examination is reviewed, and the salient cytomorphologic features are described. Two types of cells were encountered in the aspiration smears; type I cells were undifferentiated while type II cells showed more differentiation and frequently… (More)


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