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Hepatoblastoma - Teratoid Pattern

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Comments:
As in the previous case, this mixed epithelial-mesenchymal hepatoblastoma contains teratoid foci composed of tubulo-ductular structures of primitive epithelium with neuroectodermal features. The small dark cells scattered throughout the epithelium represent foci of extramedullary hematopoiesis, which is common in epithelial type hepatoblastomas. The patient was 1-day old and was found to have a large liver mass.

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