Benign lipoblastoma. Report of a case

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Abstract
Light and electron microscopic studies of a benign, well circumscribed lipoblastoma in a 10-year-old boy were performed. Ultrastructural examination demonstrated lipocytes, lipoblasts, undifferentiated mesenchymal cells, and occasional hibernoma cell types. Myxoid liposarcoma as a differential diagnosis was considered. However, an absence of mitosis and the hyperchromatic and bizarre nuclei of the lipoblasts ruled out the possibility of malignancy. Cancer 46:611–614, 1980.