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Hepatoblastoma - Mixed Pattern

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Mixed epithelial-mesenchymal hepatoblastomas contain admixed epithelial and mesenchymal components (such as osteoid or cartilage). The epithelial elements in this tumor show embryonal morphology, with marked basophilia due to high nuclear:cytoplasmic ratios. The mesenchymal component is represented by primitive mesenchyme with osteoid, which is the most commonly seen heterologous element. Chondroid or rhabdomyoblastic foci may also occur.

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