Lipoblastoma : Microscopic Features

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Microscopic Features: Lipoblastoma consists of irregular lobules separated by fibrous septa. The lobules are composed of adipocytes in various stages of maturation, ranging from primitive stellate or spindled mesenchymal cells (preadipocytes), to multivacuolated or small signet ring lipoblasts, to mature adipocytes. The proportion of cells in different stages of maturation varies from case to case and within individual lobules.