An unusual foreign body in the paranasal sinuses

We report a case of 38-year-old male who was reffered from eye OPD with a retained foreign body in the periobita of Rt eye extending into the Rt ethmoid and sphenoid sinuses after six months of injury. The foreign body was removed through external ethmoidectomy and incision on the periorbita of Rt eye.     

Sinonasal neuro endocrine carcinoma extending into orbit — a case report

Small Cell Neuroendocrine Carcinomas of the Sinonasal tract are extremely uncommon and distinct neoplasms with aggressive clinical behavior. They have similar morphological and immunohistochemical features to those of small cell carcinomas of the lung. They should be distinguished from Olfactory Neuroblastomas. We report a case of this rare entity. A 46-year-old woman presented with a history of injury to the right eye with facial pain and proptosis as the primary symptoms. Later she developed nasal stuffiness. C.T. Scan revealed a space occupying lesion in the right nostril extending into ethmoid sinus and orbit. Functional endoscopic sinus surgery was done with decompression of the orbit. The biopsy material was obtained from ethmoid sinus and orbit. Histopathological examination of the biopsy specimen along with Immunohistochemical stains confirmed a Small Cell Neuroendocrine Carcinoma. Patient was treated with Radiotherapy and chemotherapy and responded well.     

计算机辅助内镜鼻窦手术：一项回顾性对照研究

内镜鼻窦手术是慢性鼻．鼻窦炎患者首选治疗方法,并且在其他鼻窦、眼眶及颅底疾病的处理上正发挥越来越大的作用。尽管先进的鼻内镜和高分辨率的术前CT的应用,但是严重的并发症诸如失明,中枢神经系统的损伤,甚至死亡仍有发生,这是因为内镜鼻窦手术可能受限于解剖结构的复杂性或术中的出血。最近,计算机辅助手术技术已经实现术中解剖结构和术前影像学资料直接对比。在记录和校准之后,术者可以在计算机辅助手术设备支持下指向特定的结构,然后锁定CT影像上该设备顶端的位置。这种计算机辅助手术系统可以获得更精准的手术切除和更高的鼻窦通畅率以及更少的并发症出现的效果雄。笔者把使用计算机辅助手术的经验应用到术中导航中,并且就手术的安全性、持续时间、并发症以及手术结果几方面将它同无导航的手术进行了比较。     

神经内镜辅助下乙状窦前迷路后锁孔入路处理岩斜区病变的应用解剖研究

目的 为神经内镜辅助下乙状窦前迷路后锁孔手术入路处理岩斜区病变提供解剖学基础.方法 取10例(20侧)经福尔马林固定成人头颅标本,采用耳后"C"形切口,切口长度约6cm,模拟乙状窦前迷路后入路,神经内镜及显微镜下观察所显露的解剖结构.结果 乙状窦前缘与后半规管平面的水平距离为:右侧(9.1±1.3)mm,左侧(9.6±1.8)mm.通过调整神经内镜及显微镜角度,经乙状窦前迷路后锁孔入路可显露岩斜区的一些重要结构,清晰显示脑神经及其附近走行的血管.结论 面、前庭蜗神经及内耳道后唇均可以作为神经内镜下经乙状窦前迷路后入路定位岩斜区及其周围结构的标识.