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

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

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* ; Neurilemmoma* ; Schwann Cells

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.

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 ; Mandible ; Neck ; Neurilemmoma ; Recurrence ; Schwann Cells

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 ; Neurilemmoma* ; Obturator Nerve* ; Pelvis ; Schwann Cells

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 ; Diagnosis ; Ectoderm ; Humans ; Neurilemmoma* ; Schwann Cells

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 ; Schwann Cells ; Surface Properties ; Titanium

Neurilemmoma is a neoplasing from Schwann cells. It is usually solitary and may be benign or malignant solid or cystic, encapsulated or diffuse. We report a rare case of neurilemmoma developed in the penis and the perineum in a 19 years old male and the relevant literature has been reviewed.
Humans ; Male ; Neurilemmoma* ; Penis* ; Perineum* ; Schwann Cells ; Young Adult

Schwannoma, also known as a neurilemmoma, is a benign neurogenic tumor that arises from Schwann cells of the nerve sheath. Usually, it occurs as a slowly-growing, well-circumscribed solitary nodule on the head and neck, trunk, or extremities. However, it is rare on the oral mucosa, especially on the lip. Histologically, the lesion is characterized by an encapsulated nodule that consists of Antoni A cellular tissues with verocay bodies, and Antoni B loose myxoid tissues. Herein, we report a case of a schwannoma of the upper lip, which is a rare location
Extremities ; Head ; Lip ; Mouth Mucosa ; Neck ; Neurilemmoma ; Schwann Cells