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原位癌(高倍镜)

原位癌
当上皮全层发生非典型增生时,就已经形成肿瘤了。如图所示:当基底膜完整时,我们称“原位癌”,因为肿瘤还局限在上皮内。

原位癌(低倍镜)

When the entire epithelium is dysplastic and no normal epithelial cells are left, then the process is beyond dysplasia and is now neoplasia. If the basement membrane is still intact, as shown here, then the process is called "carcinoma in situ" because the carcinoma is still confined to the epithelium.


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