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声门区的镜下浸润癌（ｍｉｃｒｏｉｎｖａｓｉｖｅｃａｒｃｉｎｏｍａ，ＭＩＣ）是一种显微镜下浸润并穿透基底膜的局灶性癌；而声门区原位癌（Ｃｉｓ）则是指肿瘤未侵犯基底膜，仅限于上皮层的新生物。自１９３２年Ｂｒｏｄｅｒｓ最早描述Ｃｉｓ以来，人们对Ｃｉｓ的自然病史?
The glottis area of the microscopic invasive carcinoma (microinvasivecarcinoma, MIC) is a microscope infiltration and penetration of the basement membrane of the focal cancer; and glottis in situ carcinoma (Cis) refers to the tumor does not infiltrate the basement membrane, only Newborn restricted to the epithelium. The natural history of Cis since Broders first described Cis in 1932?