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We examined the cytomorphologic features of fine-needle aspiration biopsy (FNAB) specimens from 23 Wilms' tumor patients. The findings were correlated with histopathologic patterns from these tumors. The study revealed a close resemblance between the cytologic and histopathologic appearance of various cellular elements in Wilms' tumors. The major cellular patterns seen in Wilms' tumor include blastemal cells, blastemal cells with epithelial differentiation, blastemal cells with tubular differentiation, and stromal elements. It is hoped that recognition of these cellular components in aspiration smears will be helpful in establishing an FNAB diagnosis of Wilms' tumor.
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Akhtar et al. (1989) studied this question.
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