Case report: Unilateral masticatory atrophy caused by pure trigeminal motor neuropathy
Pure trigeminal motor neuropathy (PTMN) is characterized by trigeminal motor weakness without signs of trigeminal sensory dysfunction or involvement of other cranial nerves. We describe a rare case of an 83-year-old man with weakness and atrophy of the right masticatory muscle without any sensory di...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-12-01
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| Series: | Radiology Case Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1930043322008020 |
| _version_ | 1817978302893129728 |
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| author | Kaoru Kinugawa, MD Tomoo Mano, MD, PhD Yosuke Nakagawa, DDS, PhD Naoki Hotta, MD Kazuma Sugie, MD, PhD |
| author_facet | Kaoru Kinugawa, MD Tomoo Mano, MD, PhD Yosuke Nakagawa, DDS, PhD Naoki Hotta, MD Kazuma Sugie, MD, PhD |
| author_sort | Kaoru Kinugawa, MD |
| collection | DOAJ |
| description | Pure trigeminal motor neuropathy (PTMN) is characterized by trigeminal motor weakness without signs of trigeminal sensory dysfunction or involvement of other cranial nerves. We describe a rare case of an 83-year-old man with weakness and atrophy of the right masticatory muscle without any sensory disturbance. Brain computed tomography and magnetic resonance imaging revealed atrophy and fatty infiltration of the right masticatory muscle. Electromyography revealed abnormal spontaneous activity, chronic neurogenic motor unit potentials, and reduced interference patterns in the right temporalis and the masseter muscles. The patient was diagnosed with PTMN based on the clinical symptoms and examinations. Our case presents a rare clinical manifestation with unclear etiology. |
| first_indexed | 2024-04-13T22:27:32Z |
| format | Article |
| id | doaj.art-1d4145c25dcc464991cbeff3a5200357 |
| institution | Directory Open Access Journal |
| issn | 1930-0433 |
| language | English |
| last_indexed | 2024-04-13T22:27:32Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Radiology Case Reports |
| spelling | doaj.art-1d4145c25dcc464991cbeff3a52003572022-12-22T02:27:01ZengElsevierRadiology Case Reports1930-04332022-12-01171245424545Case report: Unilateral masticatory atrophy caused by pure trigeminal motor neuropathyKaoru Kinugawa, MD0Tomoo Mano, MD, PhD1Yosuke Nakagawa, DDS, PhD2Naoki Hotta, MD3Kazuma Sugie, MD, PhD4Department of Neurology, Nara Medical University, Kashihara, JapanDepartment of Neurology, Nara Medical University, Kashihara, Japan; Department of Rehabilitation Medicine, Nara Medical University, Kashihara, Japan; Corresponding author.Department of Oral and Maxillofacial Surgery, Nara Medical University, Kashihara, JapanDepartment of Rehabilitation Medicine, Nara Medical University, Kashihara, JapanDepartment of Neurology, Nara Medical University, Kashihara, JapanPure trigeminal motor neuropathy (PTMN) is characterized by trigeminal motor weakness without signs of trigeminal sensory dysfunction or involvement of other cranial nerves. We describe a rare case of an 83-year-old man with weakness and atrophy of the right masticatory muscle without any sensory disturbance. Brain computed tomography and magnetic resonance imaging revealed atrophy and fatty infiltration of the right masticatory muscle. Electromyography revealed abnormal spontaneous activity, chronic neurogenic motor unit potentials, and reduced interference patterns in the right temporalis and the masseter muscles. The patient was diagnosed with PTMN based on the clinical symptoms and examinations. Our case presents a rare clinical manifestation with unclear etiology.http://www.sciencedirect.com/science/article/pii/S1930043322008020Unilateral masticatory muscle atrophyTrigeminal nervePure trigeminal motor neuropathyMalocclusionMagnetic resonance imaging |
| spellingShingle | Kaoru Kinugawa, MD Tomoo Mano, MD, PhD Yosuke Nakagawa, DDS, PhD Naoki Hotta, MD Kazuma Sugie, MD, PhD Case report: Unilateral masticatory atrophy caused by pure trigeminal motor neuropathy Radiology Case Reports Unilateral masticatory muscle atrophy Trigeminal nerve Pure trigeminal motor neuropathy Malocclusion Magnetic resonance imaging |
| title | Case report: Unilateral masticatory atrophy caused by pure trigeminal motor neuropathy |
| title_full | Case report: Unilateral masticatory atrophy caused by pure trigeminal motor neuropathy |
| title_fullStr | Case report: Unilateral masticatory atrophy caused by pure trigeminal motor neuropathy |
| title_full_unstemmed | Case report: Unilateral masticatory atrophy caused by pure trigeminal motor neuropathy |
| title_short | Case report: Unilateral masticatory atrophy caused by pure trigeminal motor neuropathy |
| title_sort | case report unilateral masticatory atrophy caused by pure trigeminal motor neuropathy |
| topic | Unilateral masticatory muscle atrophy Trigeminal nerve Pure trigeminal motor neuropathy Malocclusion Magnetic resonance imaging |
| url | http://www.sciencedirect.com/science/article/pii/S1930043322008020 |
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