Anastomotic orifice healed without cicatricial tissue and granulation tissue.The internal surfaces of prosthesis were smooth and glossy with white tunica mucosa covered.

• 在普通光学显微镜下，可见气管假体的吻合口两端及吻合口处有气管黏膜生长，其内表面被覆无明显纤毛存在的假复层柱状上皮；