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In this review, the cytological features of the most common entities \u2013 i.e., neuroblastic tumours, nephroblastomas, retinoblastomas, and hepatoblastomas \u2013 are covered. Summary: Blastemal tumours are composed of blastemal cells, which are frequently rounded or oval. This morphological similarity among different entities requires detailed clinical and radiological information for accurate diagnosis. Cytological specimens play a crucial role, especially when histological specimens are not available or in cases where a prompt initiation of treatment is needed. Key Messages: Cytological smears are highly cellular and show specific patterns for accurate histological typing. 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