1.A Case of Retroperitoneal Neurilemmoma.
Young Jai LEE ; Yong Hyun CHO ; Mi Kyung HUH ; Dai Haeng CHO
Korean Journal of Urology 1982;23(7):985-988
Neurilemmoma is a relatively rare, which was first described by Stout in 1935. Neurilemmoma is a neoplasm arising from Schwann cells. It is usually solitary and may be benign or malignant, solid or cystic, encapsulated or diffuse. We report one case of retroperitoneal neurilemmoma with review of literature.
Neurilemmoma*
;
Schwann Cells
2.A Case of Retroperitoneal Neurilemmoma.
Jong Ho LEE ; Se Joong KIM ; Young Key CHO
Korean Journal of Urology 1989;30(5):790-793
Neurilemmoma is a neoplasm arising from Schwann cells. It is usually solitary and may be benign or malignant, solid or cystic, encapsulated or diffuse. It rarely occurs in the retroperitoneum. We report one case of retroperitoneal neurilemmoma with review of the literatures.
Neurilemmoma*
;
Schwann Cells
3.A Case of Ancient Schwannoma of the Lingual Nerve.
Tae Woon KIM ; Cheol Ha GO ; Byung Uk SONG ; Cheol Min YANG
Korean Journal of Otolaryngology - Head and Neck Surgery 2000;43(5):559-561
Schwannomas are neurogenic tumors that arise from Schwann cells of the neural sheath. They are most often benign and solitary. Ancient schwannoma is a rare variant of schwannoma with a typical characteristics of a slow growing benign tumor. A case of ancient schwannoma which originated from the lingual nerve has not been reported in the literature yet. The clinical and histological aspects of this tumor are discussed and the literature regarding this rare entity is reviewed.
Lingual Nerve*
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Neurilemmoma*
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Schwann Cells
4.Schwannoma Originated from Obturator Nerve of Pelvic Cavity in Patient with Urinary Frequency.
Jae Hun JUNG ; Hang Ki JUNG ; Sung Cheol KAM ; See Min CHOI ; Jae Seok HYUN ; Ky Hyun JUNG ; Jeong Seok HWA
Korean Journal of Urology 2005;46(9):992-994
A Schwannoma is a tumor originating from the neural sheath of Schwann cells, and is also known as a neurilemmoma, neurinoma or fibroblastoma. It can be either a benign or malignant tumor arising from the associated nerve sheath. Here, a case of a Schwannoma, originated from the obturator nerve of the pelvic cavity, in a patient with urinary frequency is reported, with a brief review of the literature.
Humans
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Neurilemmoma*
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Obturator Nerve*
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Pelvis
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Schwann Cells
5.Intraosseous schwannoma in the mandible.
Journal of the Korean Association of Oral and Maxillofacial Surgeons 2009;35(4):253-256
Schwannoma(neurilemmoma) is a benign neoplasm that originates from the Schwann cells. Schwannoma most commonly arises in the soft tissue of the head and neck. Intraoral lesions are uncommon, however, and intraosseous schwannoma are even rare. The most common site of occurrence for these unusual lesions is the mandible. This article documents a case of an intraosseous schwannoma located in the mandibular ascending ramus. The lesion was surgically removed and no radiographic evidence of recurrence was observed after 1 year.
Head
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Mandible
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Neck
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Neurilemmoma
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Recurrence
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Schwann Cells
6.Experimental study of facial nerve regeneration through polytetraflouroethylene tube with Schwann cells self-planted.
Xin XU ; Xue-guang ZHANG ; Yue MA ; Shan-zhen SUN
West China Journal of Stomatology 2005;23(4):316-318
OBJECTIVETo observe the effect of using polytetraflouroethylene (e-PTFE) tube with self-Schwann cells implanted to repair facial nerve defect.
METHODSEnzymatic digest method was used to get pure Schwann cells in short time. The e-PTFE membrane tube was used to bridge the 1.0 cm defect of facial nerve and pure self-Schwann cells were injected into the tube. As control group, the e-PTFE tube without self-Schwann cells was used in the same way. Electric physiological and histological examinations were taken in different times.
RESULTSThe effect of nerve regeneration of the experimental group was better than control group at any time. The nerve conduction velocity of the experimental group was 29.70 m/s in the 16th week, while the control groups was 23.00 m/s respectively at the same time.
CONCLUSIONIt is possible to obtain sufficient active Schwann cells by enzymatic digest method. Using e-PTFE tube to bridge the defect of facial nerve with self-Schwann cells implanted can get effect of nerve regeneration.
Facial Nerve ; Humans ; Nerve Regeneration ; Schwann Cells
7.A Case Report of Schwannoma on Nasal Tip.
Joo Bong MOON ; Jung Min PARK ; Jae Sung HA ; Keun Cheol LEE ; Seok Kwun KIM ; Seo Hee RHA
Journal of the Korean Society of Aesthetic Plastic Surgery 2005;11(2):280-283
Neurilemoma(schwannoma, neurinoma, Schwann's cell tumor) is a relatively uncommon, slowly growing lesion that usually has been present for a considerable time before diagnosis and treatment are requested. The site of origin is believed to be the ectodermal Schwann cells of the nerve sheath. An interesting variant, known as the ancient neurilemoma, has been reported by Eversole and others. They suggest that the histologic feature that typify this tumor result from degenerative changes which occur as a classic neurilemoma ages. We have experienced a case of schwannoma arising on the nasal tip of a 27 years old man and discussed with brief current literatures review.
Adult
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Diagnosis
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Ectoderm
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Humans
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Neurilemmoma*
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Schwann Cells
8.Effects of different implant surface properties on the biological behavior of Schwann cells.
Yan-Ying WANG ; Ping GONG ; Jian ZHANG
West China Journal of Stomatology 2021;39(3):279-285
OBJECTIVES:
This study investigated the effects of different implant surface properties on the biological behavior of Schwann cells.
METHODS:
Schwann cells (SCs) were cultured on three types of implant surfaces including smooth polished (SMO), sand-blasted, large grit, acid-etched (SLA), and chemically-modified SLA (modSLA). At different time points, the morphology and adhesion of SCs on the implant surfaces were observed by scanning electron microscope. Cell proliferation activity was detected by MTT method. The expression levels of nerve growth factor (NGF) and brain-derived neurotrophic factor (BDNF) were detected by enzyme-linked immunosorbent assay. Changes in the mRNA levels of NGF and BDNF were detected by real-time fluorescent quantitative polymerase chain reaction (PCR).
RESULTS:
SCs adhered, stretched, and proliferated well on the three types of implant surfaces. On the 3rd, 5th, and 7th days, the OD values of the SMO group were higher than those of the SLA group and the modSLA group, and the difference was statistically significant (
CONCLUSIONS
Different implant surface properties have different effects on the biological behavior of SCs. Proliferation of SCs is significantly promoted by smooth surface, while secretion and gene expression of neurotrophic factors are significantly promoted by modSLA surface at early stage.
Dental Implants
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Schwann Cells
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Surface Properties
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Titanium
9.Primary Neurofibroma of Trachea: A Case Report.
Jun Hyun KIM ; Tae Seung SONG ; Dong Kwan KIM ; Seung Il PARK ; Kwang Hyun SOHN
The Korean Journal of Thoracic and Cardiovascular Surgery 1998;31(1):82-85
Benign tumors of the trachea are rare and are usually misdiagnosed as bronchial asthma because of the similarity of the symptoms and signs. Although the prognosis of neurofibroma which originats from Schwann cells is good, it may recur or undergo malignant change, so segmental resection of the trachea is recommended. Recently, we experienced a case of primary neurofibroma of the trachea treated successfully by segmental resection of the trachea and end-to-end anastomosis. We report it with a brief review of literatures.
Asthma
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Neurofibroma*
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Prognosis
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Schwann Cells
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Trachea*
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Tracheal Neoplasms
10.Large Forefoot Schwannoma: A Case Report.
Eun Seok SEO ; Joo Han LEE ; Suk Ha JEON
Journal of Korean Foot and Ankle Society 2014;18(4):212-216
A schwannoma is a benign neurogenic tumor derived from Schwann cells. A rare case of a large painful schwannoma in the foot with metatarsal deformity was presented. Due to suspicion of malignancy, amputation had been recommended previously. We report on a rare case of a large forefoot schwannoma causing pain and paresthesia of the forefoot.
Amputation
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Foot
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Foot Deformities
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Neurilemmoma*
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Paresthesia
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Schwann Cells