这个词是什么意思？
A sarcoma derived from deep fibrous tissue, characterized by bundles of immature proliferating fibroblasts with variable collagen formation, which tends to invade locally and metastasize by the bloodstream. (Stedman, 25th ed)
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D005354 · MeSH 2026。
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