نتایج جستجو برای: schwannoma
تعداد نتایج: 5182 فیلتر نتایج به سال:
Plexiform schwannoma is a rare benign neoplasm of the neural sheath characterized by a multinodular plexiform growth pattern. The tumor usually occurs as an isolated finding, although rare cases have been reported in association with neurofibromatosis type 2 (NF2). A 25-year-old man was admitted for foot drop. He had an asymptomatic skin-colored nodule on his neck that had been present for 10 y...
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 is treated by surgical excision. Here, we describe a case of schwannoma of the tongue, include a review of the literature from 1955 to 2016, and provide data on age, ...
Schwannoma is a benign nerve sheath neoplasm which mainly locates in the soft tissue but rarely originates in the bone. Intraosseous Schwannoma is prone to occur in the mandible and sacrum, while its occurrence is seldom seen in the calcaneus. Herein we report an 18-year-old man with a chief complaint of pain in the right heel. Radiographs revealed a huge, osteolytic, and expansile lesion with ...
We describe a schwannoma located in the mid-diaphyseal region of the fibula of a 14-year-old boy. Radiologically this was an expansile, lytic, globular and trabeculated lesion. MRI showed a narrow transition zone with a break in the cortex and adjacent tissue oedema. Differential diagnosis included schwannoma, fibrous dysplasia, giant cell tumour and aneurysmal bone cyst. The tumour was excised...
Schwannoma or neurilemmoma is a well-defined, benign tumor, which arises from neural crest cells and surrounds the nerve sheath. It is rare neoplasm that is typically found in the extremities, such as the thorax, head, neck, pelvis and rectum. Schwannoma localized to the pancreas is particularly rare and only a limited number of cases have been reported in the literature to date. The present st...
Giant spinal schwannoma of the cauda equine involving many nerve roots is rare, and ossification is usually not observed in the schwannoma. A 21-year-old man presented with a 12-month history of urinary dysfunction and numbness below the buttocks. Plain radiography showed scalloping of the posterior surface of the vertebral bodies from L4 to the sacrum, and magnetic resonance imaging and comput...
Schwannomas are tumors of the nervous system that occur sporadically and in patients with the cancer predisposition syndrome neurofibromatosis type 2 (NF2). Schwannomas and all NF2-related tumors are caused by loss of the tumor suppressor merlin. Using our human in vitro model for schwannoma, we analyzed extracellular signal-regulated kinase 1/2 (ERK1/2) and AKT signaling pathways, their upstre...
introduction: schwannoma, or neurilemmoma, is a benign neoplasm of schwann cells that is extremely rare in the soft palate. herein we present a case of a soft palate schwannoma presenting with an ulcerated surface and purplish colour in a 12 year-old girl. this report also introduces a successful surgical technique for coverage of the defect left by surgery.
Intramedullary schwannoma is often misdiagnosed as other types of malignant tumour prior to surgery due to its atypical imaging appearance and low incidence. In the present study, a case of small intramedullary schwannoma was analysed using clinical and imaging data. Data concerning the surgery and follow-up process of this case were collected. Instead of performing the traditional surgical pro...
Background. We discuss a particular case of apparent palatine tonsil cancer that was then shown to be vagal schwannoma. Only a few cases of palatine schwannoma have been discussed in the international literature. This case is the first in which a vagal schwannoma manifested itself as a palatine tonsil cancer. Case report. A 75-year-old man reported persistent dysphonia associated with dyspnea i...
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