用电镜方法观察了一例已经甲醛固定的肾肿瘤标本，以明确诊断。发现光镜下所见的肿瘤组织内横纹肌肉瘤样细胞，电镜下可见其胞浆内有较多的张力原纤维，未见肌丝，癌细胞间可见成串的桥粒。电镜诊断为（肾脏）鳞状细胞癌。 An electron microscopic observation of an example of renal cell carcinoma has been fixed in formaldehyde to confirm the diagnosis. Found in the light microscope, the tumor tissue rhabdomyosarcoma-like cells, electron microscopy can be seen in the cytoplasm more tension fibril, no myofilament, cancer cells can be seen in clusters of desmosomes. Electron microscopic diagnosis of (kidney) squamous cell carcinoma.