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由胸膜和腹膜起源的局限性纤维性肿瘤习惯上称为纤维性间皮瘤。某些胸膜肿瘤的间皮性质已由电镜所证实。另一方面,其它一些局限性胸膜间皮瘤则只由纤维母细胞组成。恶性和良性胸膜纤维母细胞性问皮瘤的组织学培养研究证明了这种二源性,并认为某些胸膜纤维间皮瘤起源于间皮细胞,而另一些则可能起源于间皮下的结缔组织细胞。腹膜腔中孤立的纤维性间皮瘤比胸膜的孤立性纤维性间皮瘤少见。腹膜的纤维性肿瘤没有进行电镜或组织学培养研究。故对其细胞起源尚无证据。这些孤立的纤维性肿瘤
Localized fibrous tumors originating from the pleura and peritoneum are customarily referred to as fibrous mesothelioma. The mesothelial properties of some pleural tumors have been confirmed by electron microscopy. On the other hand, other limitations of pleural mesothelioma only consist of fibroblasts. Studies of histological cultures of malignant and benign pleural fibroblastic mesothelioma have demonstrated this duality, and it is believed that some pleural fibroid mesothelioma originated in mesothelial cells, while others may have originated in mesothelioma Tissue cells. Isolated fibrous mesothelioma in the peritoneal cavity is rarer than isolated fibrous mesothelioma in the pleura. Peritoneal fibrous tumors were not studied by electron microscopy or histological culture. Therefore, there is no evidence for the origin of its cells. These isolated fibrous tumors