• 대한두경부종양학회지
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• 제33권2호
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• pp.35-38
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• 2017

Neurilemmomas are benign tumors originating from Schwann cells, and may occur in various nerves; however, they rarely originate from the lingual nerve. When a lingual nerve neurilemmoma develops in the submandibular space, it can be challenging to diagnose it preoperatively, and this tumor can be misdiagnosed as a usual submandibular gland tumor owing to the rarity and a lack of knowledge about lingual nerve neurilemmomas. Therefore, it is important to consider neurilemmoma in the differential diagnosis in cases where the characteristics of the tumor do not correspond with the typical findings of submandibular gland tumors, in order to avoid inadvertent sacrifice of the nerve because of incorrect diagnosis of a salivary gland tumor. Herein, we report a lingual nerve neurilemmoma in the submandibular space, along with a literature review, to highlight the clinical significance and improve understanding of this type of tumor.

• 대한후두음성언어의학회지
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• 제11권2호
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• pp.188-191
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• 2000

In thyroid and parathyroid surgery, damage to the recurrent laryngeal nerve(RLN) is the most common iatrogenic cause of vocal cord paralysis. Identification and preservation of the BLNs and meticulous technique can siginificantly decrease the incidence of this complication. We experienced one case of NRRLN in a patient with the parathyroid adenoma. During the dissection, there was no branch to be considered as RLN in tracheoesophageal groove. While searching for the RLN, We found a white structure coursing horizontally at the level of cricoid cartilage directly arising from the vagus nerve in the carotid sheath. That structure was nonrecurrent recurrent laryngeal nerve(NRRLN) and NRRLNs are exceedingly rare. Awareness of the possibility of NRRLN will prevent the surgeon from accidentally severing one if it is encountered during surgery.

• 대한족부족관절학회지
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• 제15권1호
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• pp.44-46
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• 2011

Sural nerve is a sensory nerve that innervates the lateral side of ankle and foot, and the injury of this nerve can be usually caused by surgical approch of calaneal fracture or achilles tendon injury. Entrapment neuropahty of sural nerve caused by bony fragment after calcaneal fracture is not reported, yet. Authors experienced one case that sural nerve injury due to bony fragment after calcaneal fracture and we regard that it is a rare case, so we report this case after reviewing literatures.

• 대한두경부종양학회지
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• 제26권2호
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• pp.253-255
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• 2010

Identification and protection of the facial nerve is very important in the proper operation of the parotid tumor. Posterior approach which finds main trunk of the facial nerve by surgical landmark such as tragal pointer, tympanomastoid suture, and posterior belly of digastric muscle is most commonly used. In case of posterior located tumor, inferior approach may be used, in which the retromandibular vein is followed from the neck and inferior branch of the facial nerve is located. In general, the facial nerve lies superficial to the retromandibular vein. But we experienced the anomalous relationship of the facial nerve and the retromandibular vien. We report this case with a literature review.

• The Korean Journal of Physiology and Pharmacology
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• 제9권3호
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• pp.143-147
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• 2005

Following peripheral nerve injury, excessive nociceptive inputs result in diverse physiological alterations in the spinal cord substantia gelatinosa (SG), lamina II of the dorsal horn. Here, I report the alterations of excitatory or inhibitory transmission in the SG of a rat model for neuropathic pain ('spared nerve injury'). Results from whole-cell recordings of SG neurons show that the number of distinct primary afferent fibers, identified by graded intensity of stimulation, is increased at 2 weeks after spared nerve injury. In addition, short-term depression, recognized by paired-pulse ratio of excitatory postsynaptic currents, is significantly increased, indicating the increase of glutamate release probability at primary afferent terminals. The peripheral nerve injury also increases the amplitude, but not the frequency, of spontaneous inhibitory postsynaptic currents. These data support the hypothesis that peripheral nerve injury modifies spinal pain conduction and modulation systems to develop neuropathic pain.

• Journal of Korean Neurosurgical Society
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• 제44권5호
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• pp.285-294
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• 2008

Objective: Jugular foramen schwannomas are uncommon pathological conditions. This article is constituted for screening these tumors in a wide perspective. Materials: One-hundred-and-ninty-nine patients published in 19 articles between 1984 to 2007 years was collected from Medline/Index Medicus. Results: The series consist of 83 male and 98 female. The mean age of 199 operated patients was 40.4 years. The lesion located on the right side in 32 patients and on the left side in 60 patients. The most common presenting clinical symptoms were hearing loss, tinnitus, disphagia, ataxia, and hoarseness. Complete tumor removal was achieved in 159 patients. In fourteen patients tumor reappeared unexpectedly. The tumor was thought to originate from the glossopharyngeal nerve in forty seven cases; vagal nerve in twenty six cases; and cranial accessory nerve in eleven cases. The most common postoperative complications were lower cranial nerve palsy and facial nerve palsy. Cerebrospinal fluid leakage, meningitis, aspiration pneumonia and mastoiditis were seen as other complications. Conclusion: This review shows that jugular foramen schwannomas still have prominently high morbidity and those complications caused by postoperative lower cranial nerve injury are life threat.

• Journal of Korean Neurosurgical Society
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• 제45권1호
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• pp.57-59
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• 2009

Guyon's canal at the wrist is not the common site of ulnar nerve compression. Ganglion, lipoma, anomalous tendon and muscles, trauma related to an occupation, arthritis, and carpal bone fracture can cause ulnar nerve compression at the wrist. However, ulnar nerve compression at Guyon's canal by vascular lesion is rare. Ulnar artery aneurysm, tortous ulnar artery, hemangioma, and thrombosis have been reported in the literature as vascular lesions. The authors experienced a case of ulnar nerve compression at Guyon's canal by an arteriovenous malformation (AVM) and the patient's symptom was improved after surgical resection. We can not easily predict vascular lesion as a cause of ulnar nerve compression at Guyon's canal. However, if there is not obvious etiology, we should consider vascular lesion as another possible etiology.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제38권6호
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• pp.384-393
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• 2012

The trigeminal nerve, one of the cranial nerves, innervates the maxillofacial area and has three branches: the ophthalmic, maxillary, and mandibular nerves. Paresthesia, due to damages to the inferior alveolar nerve and mental nerve (branches of the mandibular nerve), is quite frequent in dental implants and third molar extractions. As medical disputes are increasing, it is necessary to formulate an objective and reasonable disability evaluation. When evaluating the frequent rate of impairment for inferior alveolar nerve damage, it may be reasonable to follow the criteria for the rate of maxillofacial impairment of the American Association of Oral and Maxillofacial Surgeons (AAOMS) - the most scientific and reputable criteria based on the American Medical Association (AMA). Therefore, the Committee of Guides for Maxillofacial Impairment Ratings, in the Korean Association of Oral and Maxillofacial Surgeons (KAOMS), is trying to suggest more reasonable and realistic guidelines for evaluating impairments by reviewing the current evaluation criteria and those of AMA and AAOMS.

• Investigative Magnetic Resonance Imaging
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• 제6권2호
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• pp.147-151
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• 2002

전방골간신경 증후군은 전방골간신경의 질환으로서, 장무지 굴근, 심수지 굴근 및 방형 회내근의 마비가 나타나고, 감각은 정상인 것이 특징적이다. 전방골간신경 증후군은 많이 알려져 있으나 자기공명영상 소견에 대한 보고는 적으며, 신경 분포의 해부학적 변이를 가지는 전방골간신경 증후군에 관한 보고는 더욱 드물다. 저자들은 정상변이의 신경분포를 보이는 전방골간신경 증후군 증례를 1예 경험하였기에 방사선학적 소견을 문헌고찰과 함께 보고하고자 한다.

• 대한물리치료과학회지
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• 제4권3호
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• pp.499-509
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• 1997

The facial nerve have a long pathway. Thus facial nerve fibers easily involved at any point along their course will lead to a facial palsy of lower motor neuron type and upper motor neuron type. The electrophysiologic examination can evaluate and anticipating that prognosis of facial nerve palsy. The electrophysiologic examination are Nerve Excitability Test(NET), Elecctroneurography(ENG), Electro-myography(EMG), Blink Reflex, and Electrogustometry et.al. The NET is very useful method for assessment of prognosis and distinguish between nerve degeneration and physiological block as early as 72 hour after onset of the facial palsy. And other examination also give objectively information of facial nerve for prognosis and treatment. Treatment goal of physiotherapy are prevent contracture and disuse atrophy of facial muscle with muscle reeducation and strengthening and maintain symmetry facial motion. The treatment better start as early as possible.