HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Figures Only Full Text Full Text (PDF) All Versions of this Article: 2253010942v1 225/3/852    most recent Submit a response Alert me when this article is cited Alert me when eLetters are posted Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Takegoshi, H. Articles by Ito, K. Search for Related Content PubMed PubMed Citation Articles by Takegoshi, H. Articles by Ito, K.

Facial Canal Anatomy in Patients with Microtia: Evaluation of the Temporal Bones with Thin-Section CT¹

¹ From the Department of Otorhinolaryngology, Faculty of Medicine, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan. Received May 21, 2001; revision requested July 9; final revision received March 28, 2002; accepted May 13. Address correspondence to H.T. (e-mail: takegosi@saitama-med.ac.jp).

PURPOSE: To ascertain the location of the facial nerve in patients with microtia by using thin-section computed tomography (CT).

MATERIALS AND METHODS: Thin-section CT was performed in 66 ears of patients with microtia (unilateral, n = 12; bilateral, n = 34) and mandibulofacial dysostosis (MFD, n = 20). Findings were compared with those in 22 ears with normal auricles (control group) by using the Dunnett two-sided t test.

RESULTS: The facial nerve at the mastoid portion in patients with MFD was 2 mm more lateral and 3 mm more anterior than that in control subjects (P < .01). The same portion in patients with microtia was 3 mm more anterior than that in the control subjects (P < .01). The distance between the facial nerve and the most lateral point of the temporal bone in patients with MFD was 10 mm shorter and that in patients with bilateral microtia was 3 mm shorter than that in the control subjects (P < .01).

CONCLUSION: The facial nerve in patients with microtia was not more lateral from the Bill bar (vertical crest) than that in control subjects. The facial nerve in patients with MFD was different from that in patients with microtia who had no other head anomalies.

© RSNA, 2002

Index terms: Bones, dysostoses, 126.1664, 243.1664 • Ear, abnormalities, 2123.1493, 2123.1664 • Ear, CT, 2123.12118 • Nerves, facial

This article has been cited by other articles:

				S.-i. Ishimoto, K. Ito, T. Yamasoba, K. Kondo, S. Karino, H. Takegoshi, and K. Kaga Correlation Between Microtia and Temporal Bone Malformation Evaluated Using Grading Systems Arch Otolaryngol Head Neck Surg, April 1, 2005; 131(4): 326 - 329. [Abstract] [Full Text] [PDF]

				S.-i. Ishimoto, K. Ito, K. Kondo, T. Yamasoba, and K. Kaga The Role of the External Auditory Canal in the Development of the Malleal Manubrium in Humans Arch Otolaryngol Head Neck Surg, August 1, 2004; 130(8): 913 - 916. [Abstract] [Full Text] [PDF]

				C. M. Glastonbury, H. Takegoshi, and J. J. Humpal Temporal Bone Anatomy at Thin-Section CT [letter] * Dr Takegoshi responds: * The Managing Editor of Radiology responds: Radiology, July 1, 2003; 228(1): 290 - 291. [Full Text] [PDF]