本文报告一例生前作过鼓室成形术,曾装置聚乙烯海绵全听骨赝复物(Plastipore TORP),15个月后意外死亡所作颞骨组织病理学检查如下:中耳腔有慢性炎症,上鼓室有粘膜增厚和纤维条索。鼓膜具正常厚度,在TORP处则较薄,仅有一层上皮和致密胶原纤维。卵圆窗有0.5mm的纤维覆盖,T0RP与纤维组织交织固着,无炎症反应,也无异物巨细胞出现。迷路骨囊正常,血管纹、螺旋器、螺旋神经节细胞仅有轻微死亡变性改变,半规管、椭圆囊、球囊的神经上皮也只有一点死后变性,外淋巴腔、内淋巴囊及导水管正常,无积水反应。前庭神经、耳蜗神经、面神经均正常。乳突、气房系统有纤维囊性 This article reports a case of tympanoplasty before his death, had a polyethylene sponge listen to bone prosthesis (Plastipore TORP), 15 months after the accidental death of the temporal bone histopathology are as follows: the middle ear cavity has chronic inflammation, the tympanic cavity Mucosal thickening and fiber cords. Tympanic membrane with normal thickness at TORP Department is thin, only a layer of epithelial and dense collagen fibers. Oval window has 0.5mm fiber coverage, T0RP and fibrous tissue intertwined, no inflammatory reaction, no foreign body giant cells. Lost sinus sac normal, vascular pattern, spiral, spiral ganglion cells only minor death degeneration change, semicircular canal, ellipsoid capsule, the nerve lining of the balloon is only a little after degeneration, the outer lymphatic cavity, endolymphatic sac and aqueduct is normal , No water reaction. Vestibular nerve, cochlear nerve, facial nerve are normal. Mastoid, the air system has fibrous cystic