恶性间叶瘤并不少见，但由于病例取材局限，每把此肿瘤诊断成一种组织的肉瘤。
The malignant mesenchymoma is not rare actully, but owing to the one sidedness of sampling, it is always diagnosed pathomorphogically as one single tissue sarcoma.
横纹肌肉瘤是起源于原始胚胎间叶细胞的一种软组织恶性肿瘤。
Rhabdomyosarcoma a is a soft tissue neoplasm arising from primitive embryonal mesenchyma.
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