结论：儿童的中耳疾病，如中耳负压、中耳积液、急性中耳炎、鼓膜萎缩性瘢痕，均可能造成变频耳声传射的消失。
Conclusions: Children's middle-ear diseases, such as negative pressure, SOM, AOM, and atrophic scar on the ear drum, may influence the results of DPOAE.
目的：探讨射频技术治疗老年性皮肤皱纹、炎性痤疮、萎缩性瘢痕的临床疗效。
Objective To evaluate the efficacy and the treatment for gravitation wrinkles, inflammatory acne, atrophic scar with radiofrequency electric current.
结果：64块瘢痕疙瘩变为线状或萎缩性瘢痕，随诊1 ~ 6年，均获良好控制。
Results 64 cases of keloids became line-shape or atrophic scar and showed good control in 1 ~ 6 years follow-up.
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