Neoplasia is the uncontrolled multiplication of abnormal cells .
肿瘤就是一群不正常的细胞,不受控制的分裂。
The true incidence of aginal intraepithelial neoplasia is unknown , but rates of ulal carcinoma in situ hae been rising and increased more than 400 % in the united states between1973and2000 .
