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A Case of Concurrent Ampullary Adenoma and Gangliocytic Paraganglioma at the Minor Papilla Treated with Endoscopic Resection

Ko JK, Park DH, Hwang HS

A gangliocytic paraganglioma is a benign tumor of the digestive system with a very low incidence. The tumor is histopathologically characterized by a triphasic pattern consisting of epithelioid, ganglion, and...
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Schwannoma of the uterine cervix: a rare case report

Dey B, Chanu SM, Mishra J, Marbaniang E, Raphael V

Schwannomas are neurogenic tumors, which are among the most varied tumors with respect to morphology, clinical associations, and presentations; they occur in a wide variety of sites. The uterine cervix...
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A Case of Schwannoma of the Chorda Tympani Nerve

Gim H, Jeong SW

Schwannoma is a benign nerve sheath tumor composed of schwann cells. Most schwannoma arising in the middle ear are facial nerve schwannoma. In very rare occasions, schwannoma of the middle...
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Intraparotid facial nerve schwannomas

Seo BF, Choi HJ, Seo KJ, Jung SN

Schwannoma is a benign tumor rarely found in the head and neck and much less commonly found in the intraparotid facial nerve. It is a slow-growing encapsulated tumor originating from...
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Gastric Schwannoma Mimicking Advanced Gastric Cancer

Rou WS, Kim JS, Kang SH, Moon HS, Sung JK, Jeong HY

Gastric schwannoma, a rare mesenchymal tumor originating from the schwann cells of peripheral nerves, rarely occurs in the gastrointestinal tract. It accounts for only 0.2% of all gastric tumors and...
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Schwannoma of the Tongue Base with Imaging Features and Differential Diagnosis: a Rare Case Report and Literature Review

Kim TK, Kim HY, Yu IK, Son HJ, Chang DS, Jang YD

Schwannoma or neurilemmoma is a benign peripheral nerve sheath tumor that arises from Schwann cells. Approximately 25–45% of all schwannomas occur in the head and neck regions, and the intraoral...
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Immunohistochemical localization of nerve injury-induced protein-1 in mouse tissues

Ekanayake , Ahn M, Kim J, Choi Y, Shin T

Nerve injury-induced protein (Ninjurin)-1 is a cell adhesion molecule that is upregulated in neurons and Schwann cells after transection injury in rats. In this study, we investigated the localization of...
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Effect of duration from lingual nerve injury to undergoing microneurosurgery on improving sensory and taste functions: retrospective study

Nakanishi , Yamamoto Y, Tanioka K, Shintani Y, Tojyo I, Fujita S

BACKGROUND: The prognosis of recovery following microneurosurgery for injured lingual nerves varies among individual cases. This study aimed to investigate if recovery ratios of sensory and taste functions are improved...
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A rare case of isolated schwannoma in infraorbital nerve

Choi JS, Park SM, Choi KU

A schwannoma is a benign tumor that develops from Schwann cells. It is known to occur more frequently in women than men, and about one third of schwannoma cases occur...
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Sciatic nerve leachate of cattle causes neuronal differentiation of PC12 cells via ERK1/2 signaling pathway

Zhang Z, Liu Y, Zhu X, Wei L, Zhu J, Shi K, Wang G, Pan L

Previous studies have shown that the sciatic nerve has neurotrophic activity, and nerve regeneration, differentiation, and axon outgrowth can be modulated by different sciatic nerve preparations. However, numerous animals may...
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Schwann Cells Enhance Penetration of Regenerated Axons into Three-Dimensional Microchannels

Liu C, Kray J, Chan C

Nerve regeneration after injury requires proper axon alignment to bridge the lesion site and myelination to achieve functional recovery. Transplanted scaffolds with aligned channels, have been shown to induce axon...
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Radiologic Findings of Renal Schwannoma: A Case Report and Literature Review

Hwang ST, Sung DJ, Sim KC, Han NY, Park BJ, Kim MJ, Lee JH

Schwannoma is a benign nerve sheath tumor that involves Schwann cells mostly found in the head, neck, posterior mediastinum and extremities. Schwannoma develops rarely in the retroperitoneum; thus, renal schwannoma...
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A Rare Duodenal Subepithelial Tumor: Duodenal Schwannoma

Kahng DH, Kim GH, Park SG, Lee SJ, Park DY

Schwannomas are uncommon neoplasms that arise from Schwann cells of the neural sheath. Gastrointestinal schwannomas are rare among mesenchymal tumors of the gastrointestinal tract, and only a few cases have...
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A Rare Case of Aggressive Melanotic Schwannoma Occurred in Spinal Nerve of a 59-Year-Old Male

Choi SE, Cha YJ, Kim J, Cha H, Seo J, Kuh SU, Kim SJ, Kim SH

Melanotic schwannoma (MS) is a rare variant of nerve sheath neoplasm that shows ultrastructural and immunophenotypical features of Schwann cells but also has cytoplasmic melanosomes and is reactive for melanocytic...
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Effects of nerve cells and adhesion molecules on nerve conduit for peripheral nerve regeneration

Chung JR, Choi JW, Fiorellini JP, Hwang KG, Park CJ

BACKGROUND: For peripheral nerve regeneration, recent attentions have been paid to the nerve conduits made by tissue-engineering technique. Three major elements of tissue-engineering are cells, molecules, and scaffolds. METHODS: In this...
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Retroperitoneal Schwannoma Mimicking an Adrenal Mass

Lee YK, Yoo JS, Han JW, Jin SJ, Park JS, Koo JS, Yoon DS

A schwannoma is a benign neoplasm originating from the Schwann cells of the neural sheath. The most common type of benign schwannomas is the acoustic neuroma presenting with deafness. We...
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A Case of Granular Cell Tumor of the Clitoris in a Postmenopausal Woman

Min JW, Kim YS

Granular cell tumor (GCT) is a rare soft tissue tumor that derived from Schwann cells. Most are benign, less than 2% are malignant and, in the malignant cases, the prognosis...
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Schwannoma of the tongue: a case report with review of literature

Lee EY, Kim JJ, Seok H, Lee JY

BACKGROUND: Schwannomas (or neurilemmomas) of the tongue are benign, usually solitary, encapsulated masses derived from Schwann cells. Clinical evidence indicates that schwannoma is painless and slow growing. In general, schwannoma...
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The Scaffolding Protein, Grb2-associated Binder-1, in Skeletal Muscles and Terminal Schwann Cells Regulates Postnatal Neuromuscular Synapse Maturation

Park SY, Jang SY, Shin YK, Jung DK, Yoon BA, Kim JK, Jo YR, Lee HJ, Park HT

The vertebrate neuromuscular junction (NMJ) is considered as a “tripartite synapse” consisting of a motor axon terminal, a muscle endplate, and terminal Schwann cells that envelope the motor axon terminal....
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The Effect of Insulin Like Growth Factor-1 on Recovery of Facial Nerve Crush Injury

Bayrak AF, Olgun Y, Ozbakan A, Aktas S, Kulan CA, Kamaci G, Demir E, Yilmaz O, Olgun L

OBJECTIVES: The aim of this study is to investigate the efficacy of locally applied insulin-like growth factor 1 (IGF-1) on the recovery of facial nerve functions after crush injury in...
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