Unilateral widening of the inferior alveolar nerve canal: a rare anatomic variant mimicking disease

被引：0
作者：
Andrej Terzic
Minerva Becker
Benoît Imholz
Paolo Scolozzi
机构：
[1] University of Geneva Hospitals,Service of Maxillo
[2] University of Geneva Hospitals,Facial and Oral Surgery, Department of Surgery
来源：
Oral Radiology | 2013年 / 29卷
关键词：
Widening; Enlargement; Idiopathic; Inferior alveolar nerve; Tractography;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We report a case of an asymptomatic healthy 49-year-old male patient with an incidental finding of enlargement of the right inferior alveolar nerve (IAN) canal (9 vs. 4 mm). After 2 years, follow-up magnetic resonance imaging (MRI) revealed no change in the findings. In addition, MR-based diffusion tensor imaging with tractography of the right and left mandibular nerves showed that the difference in size between the right and left nerves was caused by an increased number of nerve fibers in the right IAN. During the entire follow-up period of 4 years, the patient remained symptom-free. Therefore, we suggest that the enlargement in our patient was a pure anatomic variant. However, a multitude of conditions are known to produce the identical radiological appearance in conventional radiology, including benign and malignant tumors, vascular malformations, and inflammatory disorders. We describe these pathologies in more detail as well as the possibilities for examinations with different MRI sequences.
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页码：160 / 165
页数：5
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