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blastoma[blas-to´mah] (pl. blastomas, blasto´mata)
A neoplasm composed of embryonic cells derived from the blastema of an organ or tissue. adj., adj blasto´matous.
A neoplasm composed chiefly or entirely of immature undifferentiated cells (i.e., blast forms), with little or virtually no stroma.
[blasto- + G. -oma, tumor]