In addition, the lack of atypia rules out squamous cell carcinoma. 此外,無異型性可排除鱗狀細胞癌。
This image shows squamous metaplasia of the lining of the renal pelis with broad tongues of squamous epithelium infiltrating underneath. 下圖可見腎盂上皮呈顯鱗狀上皮化生,寬舌狀的鱗狀上皮向下浸潤。