malignant change of gastric ulcer 胃溃疡恶变
Malignant change in pleomorphic adenoma 恶性多形性腺瘤
and malignant change 及其癌变
CONCLUSION Synchronous cancer of large intestines is not rare, and is related to malignant change of adenomas.
结论大肠同时多原发癌并非罕见，且与腺瘤癌变有关。
Objective:To investigate the relation between the activity of saliva-sucrase and malignant change of oral cavity tumor.
目的：探讨唾液蔗糖酶活性与口腔肿瘤恶变之间的相互关系。
Conclusions Primary ovarian malignant melanoma arising from a mature cystic teratoma with malignant change, was a rare neoplasm.
结论卵巢原发性恶性黑色素瘤来源于卵巢成熟的囊性畸胎瘤恶变，是一种罕见的卵巢肿瘤。
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