Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 5.371
Filtrar
1.
Nihon Shokakibyo Gakkai Zasshi ; 117(11): 1008-1017, 2020.
Artigo em Japonês | MEDLINE | ID: mdl-33177253

RESUMO

Upon abdominal ultrasonography, a woman in her 36 years old was diagnosed with a hypoechoic tumor with a diameter of 60mm surrounding the bile duct in the hepatic portal region. Abdominal computed tomography and magnetic resonance cholangiopancreatography revealed a tumor-like mass in the bile duct. Endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) confirmed the diagnosis of schwannoma. Considering the lesion location, it appeared to rise from the hepatoduodenal ligament. She was unwilling to undergo tumor resection;however, a year after the diagnosis, no change was observed in the tumor. Here, we report a case of schwannoma in the hepatoduodenal ligament, wherein EUS-FNA was useful for establishing a diagnosis and determining a treatment strategy.


Assuntos
Aspiração por Agulha Fina Guiada por Ultrassom Endoscópico , Neurilemoma , Adulto , Colangiopancreatografia por Ressonância Magnética , Feminino , Humanos , Neurilemoma/diagnóstico por imagem , Neurilemoma/cirurgia , Tomografia Computadorizada por Raios X , Ultrassonografia
2.
Medicine (Baltimore) ; 99(40): e21433, 2020 Oct 02.
Artigo em Inglês | MEDLINE | ID: mdl-33019381

RESUMO

INTRODUCTION: Intradural schwannomas can occur at any level of the spine. According to the literature, approximately 8% of intradural schwannomas occur in the atlantoaxial spine, and these tumors are usually located in the posterolateral or lateral spinal cord. In contrast, tumors in the ventral midline of the spinal cord are relatively rare. PATIENT CONCERNS: A 47-year-old female presented with progressively worsening neck pain and paresthesias in both upper and lower limbs for the past 5 years. DIAGNOSIS: Based on Magnetic Resonance Imaging and histopathological findings, she was diagnosed with ventral midline primary schwannoma of the cervical spinal cord. INTERVENTIONS: The patient was treated with surgical resection. OUTCOMES: Follow-up visit at 2 years after the surgery showed that the patient is neurologically intact and free of disease. CONLUSION: In summary, for the tumors in the ventral midline of the atlantoaxial spinal cord, the preferred treatment is complete surgical resection by the posterior approach compared to the anterior approach, which often improves clinical symptoms or achieves a healing effect.


Assuntos
Neurilemoma/patologia , Neoplasias da Medula Espinal/patologia , Medula Cervical/diagnóstico por imagem , Medula Cervical/patologia , Humanos , Imagem por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Cervicalgia/etiologia , Neurilemoma/diagnóstico , Neurilemoma/cirurgia , Neoplasias da Medula Espinal/diagnóstico por imagem , Neoplasias da Medula Espinal/cirurgia
3.
No Shinkei Geka ; 48(10): 909-913, 2020 Oct.
Artigo em Japonês | MEDLINE | ID: mdl-33071226

RESUMO

Trochlear nerve neurinomas are rare and solitary tumors without neurofibromatosis are extremely rare. We report a case of trochlear nerve neurinoma presenting with pathological laughter and diplopia. A 40-year-old male patient presented with diplopia and pathological laughter 2 months before admission. MRI showed a multicystic enhanced mass in the left tentorial incisura compressing the midbrain and the upper pons. The tumor was excised using the left trans-Sylvian approach with partial uncal resection. After excision of the tumor, the left trochlear nerve was identified on the surface of the lateral midbrain. The nerve was connected to the tumor. Pathological laughter completely resolved after the operation. This is the second reported case of trochlear nerve neurinoma presenting with pathological laughter. The lesion responsible for pathological laughter could be the midbrain, upper pons, diencephalon, or all of these.


Assuntos
Neoplasias dos Nervos Cranianos , Riso , Neurilemoma , Adulto , Neoplasias dos Nervos Cranianos/complicações , Neoplasias dos Nervos Cranianos/diagnóstico por imagem , Neoplasias dos Nervos Cranianos/cirurgia , Humanos , Imagem por Ressonância Magnética , Masculino , Neurilemoma/complicações , Neurilemoma/diagnóstico por imagem , Neurilemoma/cirurgia , Nervo Troclear
4.
Anticancer Res ; 40(11): 6563-6570, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-33109598

RESUMO

BACKGROUND/AIM: In this study, we investigated the locations and surgical complications of schwannomas. PATIENTS AND METHODS: Data of 130 patients with schwannomas were retrospectively reviewed. Pre- and post-operative neurological symptoms, tumor locations, and nerves of origin (sensory, motor, or mixed) were reviewed. RESULTS: Before surgery, 69 patients had Tinel-like signs, 56 patients had pain, 32 patients had numbness, four patients had motor deficits. After surgery, 20 patients had developed a new neurological deficit; 11 patients had motor deficits, ten patients had sensory deficits, and one patient had both motor and sensory deficits. Most schwannomas occurred in mixed nerves, including the median nerve in 17 patients and tibial nerve in 13 patients. CONCLUSION: The most common site of schwannoma was the median nerve. Although the nerve of origin of the schwannoma could be identified in only 26.0% of cases, the data suggest that schwannomas occur in both sensory and motor nerves.


Assuntos
Nervo Mediano/cirurgia , Neurilemoma/cirurgia , Neoplasias do Sistema Nervoso Periférico/cirurgia , Neoplasias Cutâneas/cirurgia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Seguimentos , Humanos , Masculino , Nervo Mediano/fisiopatologia , Pessoa de Meia-Idade , Neurilemoma/complicações , Neurilemoma/tratamento farmacológico , Neurilemoma/fisiopatologia , Neoplasias do Sistema Nervoso Periférico/fisiopatologia , Período Pós-Operatório , Neoplasias Cutâneas/complicações , Neoplasias Cutâneas/fisiopatologia , Resultado do Tratamento , Adulto Jovem
5.
Medicine (Baltimore) ; 99(38): e21765, 2020 Sep 18.
Artigo em Inglês | MEDLINE | ID: mdl-32957306

RESUMO

INTRODUCTION: Neurogenic tumors are the most frequent neoplasms of the lower posterior mediastinum. Traditionally, lower posterior mediastinal tumors are excised by video-assisted thoracic surgery. However, the available robotic treatment for the lower posterior mediastinum tumors to date are rare. Herein, we report a case of a right lower posterior mediastinal tumors successfully treated with retroperitoneal robot-assisted surgery using a transdiaphragmatic approach. PATIENT CONCERNS: A 54-year-old male patient without any symptoms was admitted into our department with a right lower posterior mediastinal paravertebral tumor that was detected during a medical check-up. DIAGNOSIS: A right lower posterior mediastinal paravertebral tumor. INTERVENTIONS: Retroperitoneal robot-assisted resection using a transdiaphragmatic approach was performed. OUTCOMES: The patient was treated with retroperitoneal robot-assisted surgery using a transdiaphragmatic approach and remained disease-free throughout a 6-month follow-up. His postoperative course was uneventful. Histopathological examination revealed a benign schwannoma. CONCLUSION: Our initial experience showed that retroperitoneal robot-assisted resection of a lower posterior mediastinal tumor using a transdiaphragmatic approach is technically feasible and can be considered a potential alternative for either video-assisted thoracic surgery or a thoracotomy.


Assuntos
Neoplasias do Mediastino/cirurgia , Neurilemoma/cirurgia , Procedimentos Cirúrgicos Robóticos/métodos , Humanos , Masculino , Neoplasias do Mediastino/patologia , Pessoa de Meia-Idade , Neurilemoma/patologia
6.
Medicine (Baltimore) ; 99(33): e21603, 2020 Aug 14.
Artigo em Inglês | MEDLINE | ID: mdl-32872015

RESUMO

RATIONALE: Schwannomas of the seminal vesicles are extremely rare, and only cases of single seminal vesicle schwannomas have been reported. Here, we report a case of multiple schwannoma of the seminal vesicle. PATIENT CONCERNS: We report a rare case of multiple schwannoma of the seminal vesicle that occurred in a 48-year-old man during physical examination. Multiple mixed masses in the left region of the seminal vesicle were documented with transrectal ultrasonography and magnetic resonance imaging. The patient presented no clinical symptoms, no family history of the disease and no history of genetic disease. DIAGNOSIS: Postoperative pathology revealed a diagnosis of seminal vesical schwannoma. INTERVENTIONS: The patient underwent robotic-assisted laparoscopic surgery to remove the mass. OUTCOMES: The patient recovered rapidly and the length of hospitalization was 6 days after operation. At present, there is no recurrence in 10 month follow up. LESSONS: Whether benign or malignant, single or multiple, schwannomas still need to be diagnosed by pathology because of the limitations of examination methods. Surgical resection is still the preferred treatment.


Assuntos
Neoplasias dos Genitais Masculinos/patologia , Neurilemoma/patologia , Glândulas Seminais/patologia , Neoplasias dos Genitais Masculinos/diagnóstico por imagem , Neoplasias dos Genitais Masculinos/cirurgia , Humanos , Laparoscopia/métodos , Masculino , Pessoa de Meia-Idade , Neurilemoma/diagnóstico por imagem , Neurilemoma/cirurgia , Procedimentos Cirúrgicos Robóticos/métodos , Glândulas Seminais/diagnóstico por imagem
7.
Arch. argent. pediatr ; 118(4): e410-e413, agosto 2020. ilus
Artigo em Espanhol | LILACS, BINACIS | ID: biblio-1118594

RESUMO

El schwannoma es un tumor primario, habitualmente, benigno, procedente de las células de Schwann, productoras de la vaina de mielina que recubre los nervios periféricos. Constituye menos del 10 % de los tumores intracraneales y es infrecuente en la edad pediátrica.Se presenta a un paciente de 6 años y 11 meses de edad, previamente sano, con antecedente de cefalea holocraneana intermitente asociado a proptosis y disminución de la agudeza visual del ojo izquierdo, epífora y estrabismo, con evidencia tomográfica de una masa retroocular. Se realizó la exéresis macroscópicamente completa, con diagnóstico anatomopatológico de schwannoma orbitario


Schwannoma is a usually benign primary tumor. It develops from the Schwann cells, which produce the myelin sheath that surrounds the peripheral nerves. It represents less than 10 % of the intracranial tumors, and it is infrequent in the pediatric age.We hereby present a 6-year-and-11-month-old previously healthy patient, with a history of intermittent generalized cephalea associated with proptosis and a diminished visual acuity of the left eye, epiphora and strabismus, with radiological evidence of retro-ocular mass. A macroscopically complete exeresis was performed, with an anatomopathological diagnosis of orbital schwannoma


Assuntos
Humanos , Masculino , Criança , Células de Schwann , Neurilemoma/diagnóstico por imagem , Órbita/lesões , Exoftalmia , Neoplasias , Neurilemoma/cirurgia
8.
Medicine (Baltimore) ; 99(31): e21527, 2020 Jul 31.
Artigo em Inglês | MEDLINE | ID: mdl-32756198

RESUMO

RATIONALE: Schwannoma is a tumor of the peripheral nervous system that originated in the Schwann cells of the neural sheath. Esophageal schwannomas are rare esophageal submucosal tumors, comprising approximately 2% of esophageal tumors. Since the symptoms, signs, and images of esophageal schwannoma are not specific, its preoperative diagnosis remains challenging. PATIENT CONCERNS: A 67-year-old woman visited our department with complaints of gradually developed dysphagia and dyspnea for 4 years. A chest computed tomography scan showed a well-demarcated, enhancing homogeneous tumor measuring 61 × 46 × 60 mm in the upper third of the esophagus. Upper gastrointestinal endoscopy revealed a smooth elevated lesion located 19 to 24 cm from the incisor teeth. An endoscopic ultrasound-guided fine-needle aspiration demonstrated the presence of benign spindle cells. DIAGNOSES: Histopathologic examination revealed spindle-shaped cells in a fasciculated and disarrayed architecture. The immunohistochemical study showed positivity for S-100 protein antibody and absence of staining for CD117, CD34, smooth muscle actin, and Desmin. These findings confirmed the diagnosis of benign esophageal schwannoma. INTERVENTIONS: The tumor was considered to be difficult to repair the esophagus by direct anastomosis after tumor resection. Therefore, subtotal esophagectomy and esophagogastrostomy in the right thorax were performed. OUTCOMES: The patient has been doing well with no recurrence at 36 months after the operation. LESSONS: The symptoms and surgical procedures for benign esophageal schwannoma depend on the size and location of the tumor, proper and timely treatment is essential. A definitive diagnosis is confirmed by histology, and complete excision should yield good results.


Assuntos
Neoplasias Esofágicas/patologia , Neurilemoma/patologia , Idoso , Aspiração por Agulha Fina Guiada por Ultrassom Endoscópico , Neoplasias Esofágicas/cirurgia , Feminino , Humanos , Neurilemoma/cirurgia
9.
Zhonghua Wai Ke Za Zhi ; 58(8): 653-656, 2020 Aug 01.
Artigo em Chinês | MEDLINE | ID: mdl-32727200

RESUMO

Trigeminal schwannomas(TSs) is the second most common intracranial schwannomas next to acoustic neuroma. These uncommon, slow-growing tumors, which prove to originated from Schwann cells of the fifth brain nerve, can achieve their development into various compartments.Previous to the era of microsurgery, the total tumor resection rate was low, and the postoperative neurological function was seriously damaged.With the development of microsurgery and skull base approach, the microsurgery effect of TSs has been improved. Besides, neuroendoscopy is also used in the operation of some types of trigeminal schwannomas. Radiation therapy can be performed to control tumor growth for the patients who cannot tolerate surgery, have small tumor volume, have residual tumor tissue or relapse.


Assuntos
Neoplasias dos Nervos Cranianos/cirurgia , Neurilemoma/cirurgia , Doenças do Nervo Trigêmeo/cirurgia , Neoplasias dos Nervos Cranianos/radioterapia , Humanos , Microcirurgia , Neurilemoma/radioterapia , Neuroendoscopia , Resultado do Tratamento , Doenças do Nervo Trigêmeo/radioterapia
10.
Medicine (Baltimore) ; 99(29): e20940, 2020 Jul 17.
Artigo em Inglês | MEDLINE | ID: mdl-32702833

RESUMO

RATIONALE: Schwannomas are mesenchymal tumors with low malignant potential that originate from Schwann cells. They can occur in most parts of the body, such as the head, neck, and extremities. Schwannoma in the hepatoduodenal ligament is extremely rare, and only four cases have been reported in the literature. PATIENT CONCERNS: Herein, we describe a 58-year-old female who presented with right epigastric pain for 10 days. Preoperative computed tomographic (CT) revealed a 4.5 cm × 3.8 cm tumor in the hepatic hilar area. DIAGNOSES: Schwannoma in the hepatoduodenal ligament with portal vein invasion. INTERVENTIONS: Intraoperative findings revealed that the tumor was identified in the hepatoduodenal ligament, and the left branch of the portal vein was compressed. Complete tumor resection with reparation of the portal vein was performed for the patient. Postoperative pathological examination confirmed the final diagnosis of benign schwannoma, characterized by abundant spindle-shaped cells and positive reactivity for S-100 protein. OUTCOMES: The patient had a good prognosis and had no recurrence after 37 months of follow-up. LESSONS: Our case of schwannoma in the hepatoduodenal ligament is unique owing to the portal vein invasion, aimed at helping recognize the difficulty of preoperative diagnosis.


Assuntos
Ligamentos/patologia , Neurilemoma/patologia , Omento/patologia , Neoplasias Peritoneais/patologia , Veia Porta/patologia , Feminino , Humanos , Ligamentos/diagnóstico por imagem , Ligamentos/cirurgia , Pessoa de Meia-Idade , Invasividade Neoplásica , Neurilemoma/diagnóstico por imagem , Neurilemoma/cirurgia , Omento/diagnóstico por imagem , Omento/cirurgia , Neoplasias Peritoneais/diagnóstico por imagem , Neoplasias Peritoneais/cirurgia , Veia Porta/diagnóstico por imagem , Veia Porta/cirurgia , Tomografia Computadorizada por Raios X
11.
Artigo em Chinês | MEDLINE | ID: mdl-32668880

RESUMO

Objective: To investigate the clinical manifestation and management strategy of intraparotid facial nerve schwannoma. Methods: The clinical data of 12 patients with parotid schwannoma treated in Henan Cancer Hospital from January 2009 to January 2019 were analyzed retrospectively, including 5 males and 7 females, aged from 23 to 72 years. All the 12 patients complained of a mass in the parotid region, of whom 4 patients had local discomfort and pain, and 6 patients had varying degrees of pain during palpation. Ultrasound examination showed solid mass in parotid region in 8 cases and mixed mass in 4 cases. The treatment methods, the relationship between tumor and facial nerve, the modes of treatments and the nerve functions before and after operation were analyzed and summarized with House-Brackmann grade. Results: All 12 patients received surgical treatment: 8 patients underwent tumor resection plus partial or total superficial parotidectomy, 1 patient underwent tumor resection and total parotidectomy, and 3 patients underwent tumor resection, with 1 patient in whom tumor could not be removed completely due to tumor extention to the skull base. In 9 cases, the tumor occurred in the trunk or main branch of the facial nerve, and there was no facial nerve injury occurred after surgery; in 1 case, the tumor occurred in the terminal branch of the facial nerve, and part of the severe small branches of adhesion were cut off during the operation; in 1 case, the total trunk of the facial nerve was not found and the broken end of the nerve could not be found during the operation, so the nerve transplantation was not performed. In 1 case, nerve grafting was performed after nerve transection because it was impossible to separate the trunk of the facial nerve from the tumor during the operation. Preoperatively, House-Brackmann grade (H-B)Ⅰfacial nerve function was shown in 10 patients, H-BⅡ in 1 patient and H-B Ⅴin 1 patient. Postoperatively, the facial nerve function recovered to H-B Ⅰfor 7 patients, H-B Ⅱfor 2 patients, H-B Ⅲ for 1 patient, grade Ⅳ for 1 patient with nerve transplantation, and H-B Ⅴfor 1 patient with a revised surgery due to tumor recurrence. Conclusions: The intraparotid facial nerve schwannoma is rare, and it is easy to be misdiagnosed before operation. Surgery is a main treatment for intraparotid facial nerve schwannoma. Attention should be paid to the protection of facial nerve during operation.


Assuntos
Neoplasias dos Nervos Cranianos , Doenças do Nervo Facial , Neurilemoma , Neoplasias Parotídeas , Adulto , Idoso , Neoplasias dos Nervos Cranianos/diagnóstico , Neoplasias dos Nervos Cranianos/cirurgia , Nervo Facial/cirurgia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia , Neurilemoma/diagnóstico , Neurilemoma/cirurgia , Neoplasias Parotídeas/diagnóstico , Neoplasias Parotídeas/cirurgia , Estudos Retrospectivos , Adulto Jovem
12.
Clin Nucl Med ; 45(10): 808-810, 2020 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-32604115

RESUMO

Schwannoma is a slow-growing benign tumor, which originates from Schwann cells and is usually asymptomatic. The most common sites of schwannomas are the head, neck, and extremities. However, a schwannoma located in the liver is extremely rare. Here, we report a 53-year-old woman with a hepatic lesion accidentally found by ultrasound. It was highly suggestive of hepatic cholangiocarcinoma by MRI. F-FDG PET/CT could not exclude hepatic malignant tumor due to its high metabolism. Finally, it was confirmed as hepatic schwannoma by postoperative pathology.


Assuntos
Fluordesoxiglucose F18 , Neoplasias Hepáticas/diagnóstico por imagem , Neoplasias Hepáticas/patologia , Neurilemoma/diagnóstico por imagem , Neurilemoma/patologia , Tomografia Computadorizada com Tomografia por Emissão de Pósitrons , Feminino , Humanos , Neoplasias Hepáticas/cirurgia , Imagem por Ressonância Magnética , Pessoa de Meia-Idade , Neurilemoma/cirurgia , Período Pós-Operatório
13.
J Card Surg ; 35(8): 2084-2086, 2020 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-32652658

RESUMO

Primary benign schwannomas of the heart are very rare. We report the case of a patient with a huge schwannoma of unique aortic origin. The complete resection of the rare tumor has been successfully performed. There is no recurrent tumor in the 5 years follow-up. We focus our attention on the surgical technique.


Assuntos
Aorta/cirurgia , Implante de Prótese Vascular/métodos , Neurilemoma/cirurgia , Neoplasias Vasculares/cirurgia , Aorta/diagnóstico por imagem , Aorta/patologia , Ponte Cardiopulmonar , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Neurilemoma/diagnóstico por imagem , Neurilemoma/patologia , Procedimentos Cirúrgicos Reconstrutivos , Esternotomia/métodos , Fatores de Tempo , Tomografia Computadorizada por Raios X , Resultado do Tratamento , Neoplasias Vasculares/diagnóstico por imagem , Neoplasias Vasculares/patologia
14.
J Cancer Res Ther ; 16(3): 641-646, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32719282

RESUMO

Schwannoma, a benign nerve sheath tumor, is quite rare and more so in jawbones. We report a rare case of a plexiform variant of mandibular schwannoma in a 12-year-old female with a swelling in the left mandible. Clinical features were suggestive of dentigerous cyst as a result of missing premolars and canine. Occlusal and panoramic radiography revealed an osteolytic lesion with scalloping margins, bicortical plate expansion, and agenesis of several teeth. Odontogenic keratocyst, central giant cell granuloma, odontogenic myxoma, and ameloblastic fibroma were given as radiological differential diagnoses. Histopathological examination revealed features of plexiform schwannoma which was given as the final diagnosis. The lesion was treated with surgical excision. Although odontogenic cysts/tumors are often thought of in differential diagnosis whenever well-defined radiolucencies in the jaw are encountered, it is prudent to include schwannoma. This exceptional case adds light to the fact that schwannoma should not be overlooked though it is a rare possibility and must be included in differential diagnosis of odontogenic cysts/tumors.


Assuntos
Neoplasias Mandibulares/diagnóstico , Neoplasias/diagnóstico , Neurilemoma/diagnóstico , Radiografia Panorâmica/métodos , Criança , Diagnóstico Diferencial , Feminino , Granuloma de Células Gigantes/diagnóstico , Granuloma de Células Gigantes/diagnóstico por imagem , Granuloma de Células Gigantes/cirurgia , Humanos , Neoplasias Mandibulares/diagnóstico por imagem , Neoplasias Mandibulares/cirurgia , Neoplasias/diagnóstico por imagem , Neoplasias/cirurgia , Neurilemoma/diagnóstico por imagem , Neurilemoma/cirurgia , Cistos Odontogênicos/diagnóstico , Cistos Odontogênicos/diagnóstico por imagem , Cistos Odontogênicos/cirurgia , Tumores Odontogênicos/diagnóstico , Tumores Odontogênicos/diagnóstico por imagem , Tumores Odontogênicos/cirurgia
16.
Medicine (Baltimore) ; 99(25): e20747, 2020 Jun 19.
Artigo em Inglês | MEDLINE | ID: mdl-32569218

RESUMO

RATIONALE: Optic Schwannoma is rarely observed clinically as optic nerve had anatomically impossibility for the location of Schwannoma. However, several reports described the established cases of optic Schwannoma, of which the locations were in orbit or within optic canal. The occurrence of optic Schwannoma intracranially has been not reported. PATIENT CONCERNS: A 60-year-old female complained of visual impairment in the right eye and the frequent headache and the dizziness over 2 years with unknown reasons. The result of magnetic resonance imaging (MRI) showed a round, well-circumscribed, heterogeneously enhancing signal with cystic change displayed on the right suprasellar cistern. DIAGNOSES: Intracranial optic Schwannomas. INTERVENTIONS: The patient accepted microneurosurgery assisted by endoscopy. We observed a gray and yellow lesion located near the right anterior clinoid process with a mid-sized cyst. And there was a vague boundary between the tumor and the right optic nerve which was compressed by the tumor. Optic chiasm and left optic nerve were also compressed. Meanwhile, the tumor had also adhesion to the right anterior cerebral artery (ACA). OUTCOMES: After the tumor was totally resected, the patient had satisfactory recovery. LESSONS: We reported an intracranial optic Schwannoma removal with the lateral supraorbital keyhole approach assisted by neuroendoscopy. Intracranial optic Schwannoma was rarely seen clinically. Neuroendoscopy imaging suggested the close relationship between the tumor and ACA, supporting vasculature-origin hypothesis for the optic Schwannoma.


Assuntos
Microcirurgia/métodos , Neurilemoma/cirurgia , Neuroendoscopia/métodos , Neoplasias do Nervo Óptico/cirurgia , Humanos , Imagem por Ressonância Magnética , Pessoa de Meia-Idade , Neurilemoma/diagnóstico por imagem , Nervo Óptico/diagnóstico por imagem , Nervo Óptico/cirurgia , Neoplasias do Nervo Óptico/diagnóstico por imagem
18.
Neurochirurgie ; 66(3): 179-182, 2020 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-32387428

RESUMO

BACKGROUND AND OBJECTIVES: More and more surgeons are changing their surgical procedures by using mini-invasive technology with the aim of reducing morbidity. Robotized technology for the surgery of narrow spinal space, for the resection of intervertebral foramen tumor, is a valuable option that should be considered. The authors report the case of a patient who underwent robotic surgery for the treatment of a paravertebral schwannoma and show the benefits of this approach. CASE REPORT: A 53-year-old man was treated, in 1995, via an open right latero-thoracic approach for a T8-T9 thoracic schwannoma with a complete resection. Twenty years later, the patient complained of recurrent T8-T9 thoracic pain with unilateral radicular irradiation related to a recurrent schwannoma with a right foraminal extension. Using robotic technology (Da Vinci®), a complete resection was achieved and confirmed by a postoperative MRI. The patient, who was free of neurological symptoms, discharged the hospital at day 2. COMMENTS: Robot-assisted surgery by Da Vinci® robot is a very useful approach for the treatment of spinal paravertebral schwannoma. Thanks to multi-directional arms and 3D vision, this technology is safe and effective about quality of resection. The use of mini-invasive technology should be routinely discussed for lesions in that specific location.


Assuntos
Procedimentos Cirúrgicos Minimamente Invasivos/métodos , Neurilemoma/cirurgia , Procedimentos Neurocirúrgicos/métodos , Procedimentos Cirúrgicos Robóticos/métodos , Neoplasias da Coluna Vertebral/cirurgia , Humanos , Imagem por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia , Neurilemoma/diagnóstico por imagem , Neoplasias da Coluna Vertebral/diagnóstico por imagem , Resultado do Tratamento
19.
Neurocirugía (Soc. Luso-Esp. Neurocir.) ; 31(2): 93-97, mar.-abr. 2020. ilus
Artigo em Espanhol | IBECS | ID: ibc-190377

RESUMO

Los schwannomas del nervio glosofaríngeo son tumores de la fosa posterior extraordinariamente raros. En una revisión de 100 años se encontró un total de 42 casos entre 1908-2008. Los datos clínicos más comunes se encuentran asociados a su localización, siendo los más comunes síntomas vestíbulo cocleares y síntomas de afectación de la función del nervio glosofaríngeo. Su diagnóstico actualmente se ha facilitado con el uso de la resonancia magnética; sin embargo, es muy complicado definir en ocasiones preoperatoriamente si el tumor se origina del ix, x u xi nervios craneales. Presentamos el caso de una paciente de 42 años con síndrome del ángulo pontocerebeloso, síndrome del agujero rasgado posterior (yugular) + condileo anterior (Collet-Sicard). El tratamiento empleado fue quirúrgico con abordaje extremo lateral transcondilar, con monitorización de pares craneales y potenciales evocados transoperatorios


Schwannomas of the glossopharyngeal nerve are extremely rare tumors of the posterior fossa. In a 100-year review, a total of 42 cases were found between 1908-2008. The most common clinical data are associated with its location, the most common being cochlear vestibule symptoms and symptoms of glossopharyngeal nerve function. its diagnosis has now been facilitated by the use of magnetic resonance, however, it is very complicated to define preoperatively if the tumor originates from the ix, x or xi NC. We present the case of a 42-year-old patient with a syndrome of angulopentocerebellar syndrome, posterior torn (jugular) hole syndrome + anterior condyle (Collet-Sicard). The treatment used was surgical with transcondylar lateral extreme approach, with monitoring of cranial nerves and trans-operative evoked potentials


Assuntos
Humanos , Feminino , Adulto , Neurilemoma/cirurgia , Nervo Glossofaríngeo/cirurgia , Neoplasias dos Nervos Cranianos/cirurgia , Nervos Cranianos/cirurgia , Hipestesia/diagnóstico por imagem , Paresia/diagnóstico por imagem , Audiometria , Potenciais Evocados , Nervo Glossofaríngeo/diagnóstico por imagem , Nervo Glossofaríngeo/patologia
20.
World Neurosurg ; 139: 31-38, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-32289509

RESUMO

BACKGROUND: Tumors arising from oculomotor nerve are rare, with few cases reported in the literature. Generally, whereas schwannomas are well encapsulated tumors, neurofibromas tend to invade the entire nerve fibers. These differences influence surgical resection and neurological clinical outcome, with neurofibroma often requiring the sacrifice of the nerve. Accordingly, an incorrect preoperative diagnosis can lead to incomplete patient counseling before surgery. CASE DESCRIPTION: We report 2 cases: a patient with oculomotor schwannoma and a patient with oculomotor neurofibroma. After tumor resection, the patient with a diagnosis of schwannoma recovered with 3rd nerve palsy, while patient with the neurofibroma developed a complete oculomotor nerve deficit. For each patient, surgical strategy and neurological outcome are elucidated in relation with differences in preoperative magnetic resonance imaging and histology. CONCLUSIONS: To the best of our knowledge, this is the first report of an oculomotor neurofibroma. When an oculomotor nerve tumor is suspected, a careful preoperative evaluation of magnetic resonance imaging guides in distinguishing the different histology, in selecting the treatment strategy, and in correctly informing the patient on expected postoperative neurologic outcome.


Assuntos
Neoplasias dos Nervos Cranianos/cirurgia , Neurilemoma/cirurgia , Neurofibroma/cirurgia , Doenças do Nervo Oculomotor/cirurgia , Adulto , Seio Cavernoso/diagnóstico por imagem , Neoplasias dos Nervos Cranianos/complicações , Neoplasias dos Nervos Cranianos/diagnóstico por imagem , Neoplasias dos Nervos Cranianos/patologia , Feminino , Humanos , Hidrocefalia/diagnóstico por imagem , Hidrocefalia/etiologia , Hidrocefalia/cirurgia , Imagem por Ressonância Magnética , Neurilemoma/complicações , Neurilemoma/diagnóstico por imagem , Neurilemoma/patologia , Neurofibroma/diagnóstico por imagem , Neurofibroma/patologia , Doenças do Nervo Oculomotor/complicações , Doenças do Nervo Oculomotor/diagnóstico por imagem , Doenças do Nervo Oculomotor/patologia , Recuperação de Função Fisiológica , Resultado do Tratamento , Derivação Ventriculoperitoneal
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA