间质肉瘤(Stromal sarcoma)：无上皮成分，仅由单一恶性间叶成分构成，肿瘤可由多种分化成熟和不成熟的间叶成分构成，组织形态变异较大。
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卵巢间质肉瘤 stroma sarcoma
内膜间质肉瘤 endometrial stromal sarcoma
卵巢宫内膜样间质肉瘤 endometrioid stromal sarcoma
间质性软骨肉瘤 Mesenchymal chondrosarcoma
结果小肠良性间质肿瘤5例，小肠间质肉瘤11例。
ResultsThe lesion included 5 benign stromal tumors and 11 malignantinterstitial tumors.
包括平滑肌肉瘤48例，中胚叶混合瘤47例，癌肉瘤8例，葡萄状肉瘤4例，内膜间质肉瘤37例，纤维肉瘤1例，恶性淋巴瘤8例。
Of the 153 cases, 48 were leiomyosarcomas, 47 mixed mesodermal sarcomas, 37 endometrial stromal sarcomas, 8 carcinosarcomas, 4 sarcoma botryoides, 1 fibrosarcoma, and 8 malignant lymphomas.
结果：病理类型以恶性间质瘤、腺癌、平滑肌肉瘤、恶性淋巴瘤为主。
Results: The main pathological patterns of PMTSI were malignant stromal tumor, adenocarcinoma, leiomyosarcoma and malignant lymphoma.
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