However, hyperplastic basal cell in basal cell adenoma had not distinctive atypia.The border of hyperplastic nodal which had no pathological nuclear mitoses, invasion and necrosis was clear.

• 而基底细胞食品腺瘤内增生的基底细胞食品异型性不眼科明显，无病理性核分裂象，增生结节周界清，无浸润性边缘和坏死。