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Acta Oto-Laryngologica Volume 133, 2013 - Issue 9
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FACIAL NERVE

Lateral hump anomaly of pyramid segment of facial nerve in living patients

Chuanfu DaiDepartment of Otolaryngology Head and Neck Surgery, The Ninth Medical College of Peking University, Peking University, Beijing
,
Jiandong LiDepartment of Otolaryngology Head and Neck Surgery, The Ninth Medical College of Peking University, Peking University, Beijing;Department of Otolaryngology Head and Neck Surgery, Beijing Shijitan Hospital affiliated to Capital Medical University, Capital Medical University, Beijing, PR ChinaCorrespondence[email protected]
,
Liang ZhaoDepartment of Otolaryngology Head and Neck Surgery, The Ninth Medical College of Peking University, Peking University, Beijing
,
Yongliang LiuDepartment of Otolaryngology Head and Neck Surgery, The Ninth Medical College of Peking University, Peking University, Beijing
,
Yang LiDepartment of Otolaryngology Head and Neck Surgery, Beijing Shijitan Hospital affiliated to Capital Medical University, Capital Medical University, Beijing, PR China
,
Zhiyao SongDepartment of Otolaryngology Head and Neck Surgery, The Ninth Medical College of Peking University, Peking University, Beijing
,
Shui FengDepartment of Otolaryngology Head and Neck Surgery, The Ninth Medical College of Peking University, Peking University, Beijing
&
Jieyu LuDepartment of Otolaryngology Head and Neck Surgery, Beijing Shijitan Hospital affiliated to Capital Medical University, Capital Medical University, Beijing, PR China
 show all
Pages 1006-1008 | Received 27 Feb 2013, Accepted 05 Apr 2013, Published online: 14 Jun 2013
 
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Abstract

Conclusions: A lateral hump anomaly of the pyramid segment of the facial nerve deserves special attention during otologic surgery. Coronary high-resolution CT (HRCT) reconstruction of temporal bone was highly valuable in preoperative detection of the anomaly. Objective: This study aimed to investigate lateral hump anomaly of the pyramid segment of the facial nerve in adult patients and assess the value of coronary HRCT reconstruction of the temporal bone in preoperative detection of the anomaly. Methods: We carried out a prospective study in 439 Han Chinese adults who underwent unilateral facial nerve decompression due to Bell's palsy in our department between April 2005 and October 2012, focusing on lateral hump anomaly of the pyramid segment of the facial nerve, detection sensitivity, and accuracy of coronary HRCT reconstruction of the temporal bone. Results: Lateral hump anomaly of the pyramid segment was observed in 21 cases (4.83%) undergoing surgery. The detection sensitivity and accuracy of coronary HRCT reconstruction were both 100%.

Declaration of interest: The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.

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