非典型增生可以发展为肿瘤。图示：左侧是正常子宫颈鳞状上皮，右侧属非典型增生。非典型增生是上皮细胞的异常增生，局限于上皮内，可逆。

This is the next step toward neoplasia. Here, there is normal cervical（子宫颈的） squamous epithelium at the left, but dysplastic（非典型增生） squamous epithelium at the right. Dysplasia is a disorderly growth of epithelium, but still confined to the epithelium. Dysplasia is still reversible.