In rare instances, basal cell hyperplasia shows prominent nucleoli. This is referred to as atypical basal cell hyperplasia. In most cases, this is in response to inflammation nearby.

• 少数情况下在基底细胞增生中可见到明显的核仁，这即为非典型性基底细胞增生，最常见于附近有炎症的情况下。