In benign vocal diseases, the differences of EGG waveform and variables among vocal polyp and cyst and leukoplakia were insignificant statistically, and nor were the differences among various clinical T stages in glottal carcinoma.

• 但良性病变组内即息肉、囊肿和白斑之间 ,以及喉癌组内不同T分期之间EGG波形和参数差异多数无统计学意义。