Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 122
Filter
1.
Prensa méd. argent ; 108(2): 94-100, 20220000. fig, tab
Article in Spanish | LILACS | ID: biblio-1368454

ABSTRACT

El schwannoma es una patología rara del nervio facial. Su diagnóstico preoperatorio es dificultoso dado que no tiene síntomas ni signos patognomónico de la enfermedad. La disección del nervio facial en su tronco y sus ramas con electroestimulacion es la forma de quirúrgica de sospecharlo intraoperatoriamente. La descompresión parcial o exeresis completa deberá ser considerado de acuerdo a la experiencia del equipo quirúrgico en reconstrucción nerviosa. La reparación del nervio facial como primera opción debe el injerto inmediato o sutura termino terminal. La neurotización es un procedimiento quirúrgico que le provoca al paciente simetría facial con manejo de oclusión ocular y manejo de comisura bucal, debe ser realizado antes del año de la injuria nerviosa. La rehabilitación del nervio facial necesita de un equipo multidisciplinario y la colaboración permanente del paciente para conseguir los objetivos propuestos.


Schwannoma is a rare pathology of the facial nerve. Its preoperative diagnosis is difficult since it has no symptoms or pathognomonic signs of the disease. The dissection of the facial nerve in its trunk and its branches with electrostimulation is the surgical way to suspect it intraoperatively. Partial decompression or complete exeresis should be considered according to the experience of the surgical team in nerve reconstruction. The repair of the facial nerve as a first option should be the immediate graft or end-to-end suture. Neurotization is a surgical procedure that causes the patient facial symmetry with management of ocular occlusion and management of the corner of the mouth, it must be performed within a year of the nerve injury. The rehabilitation of the facial nerve requires a multidisciplinary team and the permanent collaboration of the patient to achieve the proposed objectives.


Subject(s)
Humans , Female , Adult , Anastomosis, Surgical/methods , Nerve Transfer/rehabilitation , Hypoglossal Nerve Diseases/surgery , Facial Nerve Diseases/pathology , Preoperative Period , Neurilemmoma/pathology
2.
Rev. cir. (Impr.) ; 72(4): 342-346, ago. 2020. tab, ilus
Article in Spanish | LILACS | ID: biblio-1138720

ABSTRACT

Resumen Introducción: Los Schwannomas de la vía biliar corresponden a una entidad extremadamente infrecuente, habiéndose reportado solo escasos casos en la literatura. Caso Clínico: El presente paciente corresponde a un hombre de 45 años, a quien durante examen rutinario se le pesquisa una lesión quística hepática. La resonancia magnética confirmó la lesión, y la biopsia de la pieza resecada diagnosticó la existencia de un Schwannoma benigno con marcadores positivos para vimentina y proteína S-100.


Introduction: Bile duct schwannoma is an extremely rare condition. We report a 45 years old male patient in whom during a rutinary ultrasound exam a liver cyst was detected. Magnetic resonance confirmed lesión and the histopathology of the resected specimen was a benign schwannoma proven by positive inmunoreaction to vimentina.


Subject(s)
Humans , Male , Middle Aged , Liver Neoplasms/diagnostic imaging , Neurilemmoma/diagnostic imaging , Biopsy , Ultrasonography , Liver Neoplasms/pathology , Neurilemmoma/pathology
4.
Int. arch. otorhinolaryngol. (Impr.) ; 23(3): 360-370, July-Sept. 2019. tab, graf
Article in English | LILACS | ID: biblio-1040029

ABSTRACT

Abstract Introduction Schwannomas are benign tumors originating from differentiated Schwann cells. Being the least common intraoral neoplasm of neural origin, it is rarely seen in the palate. The literature lacks an extensive review of intraoral schwannoma confined to the palate. Objective To review previously reported cases of palatal schwannoma along with an illustrative case, and to provide a better insight regarding clinicopathological and radiological features of this neural tumor in a rare intraoral site. Data Synthesis We present a case of palatal schwannoma in a 16-year-old female. An additional 45 cases were identified in 2 medical database searches (PubMed and Google Scholar) published fromthe year 1985 onwards, and from13 countries, in the 5 continents. The ages of the patients ranged from3 to 84 years old. Palatal schwannoma showed a slight predilection to females, with a male/female ratio of ~ 1:1.81. Hard palate involvement is almost twice greater than soft palate involvement. Surgical excision was employed inalmost all of the cases, and recurrence was reported only once. Conclusion Palatal schwannomas, although rare, have been reported both over the hard and the soft palate. They mostly present as a painless, firm, well-encapsulated, slow-growing solitary lesion over the lateral palatal aspect. Imaging can add to suspicion and can delineate a differential diagnosis, but the diagnosis is confirmed by pathological examination. Fine-needle aspiration cytology (FNAC) is almost always inconclusive. Immunohistochemistry can assist in confirming a diagnosis, but is more important to rule out close differentials. Complete surgical excision is the treatment of choice, and recurrence or malignant transformation are extremely rare.


Subject(s)
Humans , Male , Female , Child, Preschool , Child , Adolescent , Adult , Middle Aged , Aged , Aged, 80 and over , Palatal Neoplasms/pathology , Neurilemmoma/pathology , Tomography, X-Ray Computed , Neurilemmoma/surgery , Neurilemmoma/diagnosis , Neurilemmoma/epidemiology
5.
Int. arch. otorhinolaryngol. (Impr.) ; 23(3): 354-359, July-Sept. 2019. tab, graf
Article in English | LILACS | ID: biblio-1040017

ABSTRACT

Abstract Introduction Schwannomas are benign, solitary, encapsulated tumors that may originate at any site of the peripheral nervous system, with the exception of the olfactory and optic nerves. Schwannomas of the base of tongue are very rare, and only sporadic cases are documented. The tongue base represents a challenge for surgeons. Carbon dioxide (CO2) laser might provide an effective surgical option for such lesions because of the easy access to the lesion, the bloodless surgical field and optimum epithelization of wounds. Objective We present an unusual case of pedunculated schwannoma of the tongue base treated via transoral CO2-assisted excision. We also provide a review of the available literature, in English language, on humans. Data synthesis The authors searched the PubMed database and Google up to July 2018. The following search terms were applied: tongue and lingual, combined with schwannoma and neurilemmoma. Titles and abstracts were screened, and, then, only supraglottic (hypopharyngeal) tongue base masses were considered. Fourteen articles were included in this review, reporting 17 cases. The age of the patients ranged from 9 to 39 years, affecting predominantly females. Dysphagia and lump sensations were the most common presenting symptoms, and the mean follow-up period range was 1.5 to 60 months (mean = 13 months). There was no evidence of recurrence in any of the cases. Conclusion We could conclude that tongue base schwannomas are rare. Transoral complete excision of the tumor is the treatment of choice. CO2 laser surgery is a minimally invasive treatment option that has been performed in few reports with no recurrence and with favorable outcomes.


Subject(s)
Humans , Male , Female , Child , Adolescent , Adult , Middle Aged , Aged , Tongue Neoplasms/surgery , Carbon Dioxide/therapeutic use , Laser Therapy/methods , Neurilemmoma/surgery , Tomography, X-Ray Computed , Diagnosis, Differential , Neurilemmoma/diagnosis , Neurilemmoma/pathology
6.
Rev. otorrinolaringol. cir. cabeza cuello ; 78(2): 191-196, jun. 2018. ilus
Article in Spanish | LILACS | ID: biblio-961614

ABSTRACT

RESUMEN Los tumores de plexo braquial son poco frecuentes, representando menos del 5% de los tumores que afectan a las extremidades superiores. Suelen presentarse entre la tercera y quinta década de la vida como una masa palpable, que puede acompañarse de dolor, parestesias y déficit motor. A continuación, presentamos un caso de un schwannoma de plexo braquial tratado en nuestro servicio.


ABSTRACT Brachial plexus tumors are uncommon, accounting for less than 5% of tumors affecting the upper extremities. They usually present between the third and fifth decade of life as a palpable mass, which can be accompanied by pain, paresthesias and motor deficit. We present a case of a brachial plexus schwannoma treated in our service.


Subject(s)
Humans , Female , Aged , Brachial Plexus , Head and Neck Neoplasms/diagnostic imaging , Neurilemmoma/diagnostic imaging , Postoperative Complications , Tomography, X-Ray Computed , Head and Neck Neoplasms/surgery , Head and Neck Neoplasms/pathology , Neurilemmoma/surgery , Neurilemmoma/pathology
8.
Odonto (Säo Bernardo do Campo) ; 25(50): 9-18, jul.-dez. 2017. tab
Article in Portuguese | LILACS, BBO | ID: biblio-998055

ABSTRACT

Introdução: Revisão da literatura comparando padrões histopatológicos e localização, em casos de Schwannoma e Neurilemmoma bucal. Metodologia: A base de dados utilizada foi Pubmed / Medline. Incluídos relatos de casos de Schwannoma e Neurilemmoma, os quais estivessem completos, contendo a idade, localização, gênero, aspectos histopatológico e imunoistoquimico. Resultados: Com a análise dos dados encontrados, constatamos que o gênero Feminino foi mais acometido, região mais afetada foi a língua, a média de idade encontrada foi de 33,46 anos, o padrão histopatológico encontrado com maior frequência foi a presença de padrões Antoni A e Antoni B juntos (38 casos). Conclusão: Observamos a importância da confirmação com imunoistoquimica positiva para S-100.(AU)


Introduction: Literature review comparing histopathological patterns and location in cases of Schwannoma and / or oral Neurilemmoma. Methods: The database used was Pubmed / Medline. Including reports of Schwannoma ou Neurilemmoma cases, which were complete, containing age, location, gender, histopathology and immunohistochemistry. Results: With the analysis of the data found, we found that the female gender was more affected, the region more affected was the tongue, the mean age was 33.46 years, the most frequently found histopathological pattern was the presence of Antoni A and Antoni B patterns together (38 cases). Conclusion: We observed the importance of the confirmation with immunohistochemistry + S-100.(AU)


Subject(s)
Humans , Male , Female , Mouth Neoplasms/pathology , Neurilemmoma/pathology , Sex Factors , Age Factors
9.
Clinics ; 72(9): 554-561, Sept. 2017. tab, graf
Article in English | LILACS | ID: biblio-890736

ABSTRACT

OBJECTIVES: Access to the pterygopalatine fossa is very difficult due to its complex anatomy. Therefore, an open approach is traditionally used, but morbidity is unavoidable. To overcome this problem, an endoscopic endonasal approach was developed as a minimally invasive procedure. The surgical aim of the present study was to evaluate the utility of the endoscopic endonasal approach for the management of both benign and malignant tumors of the pterygopalatine fossa. METHOD: We report our experience with the endoscopic endonasal approach for the management of both benign and malignant tumors and summarize recent recommendations. A total of 13 patients underwent surgery via the endoscopic endonasal approach for pterygopalatine fossa masses from 2014 to 2016. This case group consisted of 12 benign tumors (10 juvenile nasopharyngeal angiofibromas and two schwannomas) and one malignant tumor. RESULTS: No recurrent tumor developed during the follow-up period. One residual tumor (juvenile nasopharyngeal angiofibroma) that remained in the cavernous sinus was stable. There were no significant complications. Typical sequelae included hypesthesia of the maxillary nerve, trismus, and dry eye syndrome. CONCLUSION: The low frequency of complications together with the high efficacy of resection support the use of the endoscopic endonasal approach as a feasible, safe, and beneficial technique for the management of masses in the pterygopalatine fossa.


Subject(s)
Humans , Male , Female , Adolescent , Adult , Middle Aged , Young Adult , Nasopharyngeal Neoplasms/surgery , Angiofibroma/surgery , Pterygopalatine Fossa/surgery , Transanal Endoscopic Surgery/methods , Neurilemmoma/surgery , Magnetic Resonance Imaging/methods , Carcinoma/surgery , Carcinoma/pathology , Carcinoma/diagnostic imaging , Tomography, X-Ray Computed/methods , Nasopharyngeal Neoplasms/pathology , Nasopharyngeal Neoplasms/diagnostic imaging , Nose Neoplasms/surgery , Nose Neoplasms/pathology , Nose Neoplasms/diagnostic imaging , Reproducibility of Results , Retrospective Studies , Follow-Up Studies , Treatment Outcome , Angiofibroma/pathology , Angiofibroma/diagnostic imaging , Embolization, Therapeutic/methods , Pterygopalatine Fossa/pathology , Pterygopalatine Fossa/diagnostic imaging , Neoplasm Grading , Neurilemmoma/pathology , Neurilemmoma/diagnostic imaging
11.
Rev. AMRIGS ; 61(1): 64-67, jan.-mar. 2017. ilus
Article in Portuguese | LILACS | ID: biblio-849262

ABSTRACT

Introdução: O Schwannoma é uma neoplasia benigna com origem nas células de Schwann presentes na bainha de nervos autossômicos periféricos. Localiza-se cranial ou extracranial. Na cabeça e pescoço constitui 30 a 45% dos casos extracraniais, sendo que 4% deles estão localizados no nariz e seios paranasais. Relato do caso: Paciente feminina, 37 anos, realizou tomografia de crânio após queda para investigar trauma cranioencefálico. Esta identificou velamento de seios paranasais à esquerda. O achado motivou a investigação da hiposmia e obstrução nasal à esquerda de longa data. À rinoscopia anterior, observou-se lesão expansiva polipoide ocupando a fossa nasal, não permitindo a passagem do nasofibroscópio. Tomografia computadorizada evidenciou lesão ocupando totalmente a fossa nasal esquerda, velamento do seio maxilar e células etmoidais anteriores e posteriores à esquerda. Realizou-se exérese endoscópica da lesão, que tinha provável origem no recesso esfenoetmoidal. A biópsia transoperatória com congelação observou lesão inflamatória. A confirmação do diagnóstico de Schwannoma foi feita pelo anatomopatológico e imuno-histoquímica, que evidenciou alta reatividade à proteína S-100. Discussão: As lesões intranasais unilaterais apresentam inúmeras possibilidades diagnósticas. Os sintomas são inespecíficos e os exames de imagem pouco esclarecedores. Neste relato, a tomografia sugeriu pólipo de Killian ou papiloma invertido pela unilateralidade da lesão. Porém, as características histopatológicas e a imunorreatividade à proteína S-100 auxiliaram na confirmação diagnóstica. Conclusão: O Schwannoma intranasal faz parte do diagnóstico diferencial das lesões intranasais. O exame histopatológico e a imunohistoquímica são de extrema importância para confirmação diagnóstica frente à inespecificidade dos sintomas e achados radiológicos (AU)


Introduction: Schwannoma is a benign neoplasm originating in the Schwann cells present in the sheath of peripheral autosomal nerves. It is located cranially or extracranially. In the head and neck it comprises 30 to 45% of extracranial cases, 4% of which located in the nose and paranasal sinuses. Case report: A 37-year-old female patient underwent skull tomography after a fall to investigate cranioencephalic trauma. This identified veiling of paranasal sinuses on the left. The finding motivated the investigation of long-standing hyposmia and nasal obstruction on the left. At anterior rhinoscopy, an expansive polypoid lesion occupying the nasal fossa was observed, not allowing the nasofibroscope to pass. Computed tomography revealed a lesion totally occupying the left nasal fossa, maxillary sinus veil, and anterior and posterior ethmoid cells on the left. Endoscopic excision of the lesion that was likely to originate in the sphenoethmoidal recess was performed. Intraoperative biopsy with freezing showed an inflammatory lesion. Confirmation of the Schwannoma diagnosis was made by pathology and immunohistochemistry that showed high reactivity to S-100 protein. Discussion: Unilateral intranasal lesions present numerous diagnostic possibilities. The symptoms are nonspecific and imaging exams are not very elucidating. In this report, CT scan suggested a Killian polyp or inverted papilloma due to the unilaterality of the lesion. However, the histopathological characteristics and immunoreactivity to the S-100 protein aided in the diagnostic confirmation. Conclusion: Intranasal Schwannoma is part of the differential diagnosis of intranasal lesions. Histopathological examination and immunohistochemistry are extremely important for diagnostic confirmation in the face of the non-specificity of symptoms and radiological findings (AU)


Subject(s)
Humans , Female , Adult , Neurilemmoma/diagnosis , Nose Neoplasms/diagnosis , Paranasal Sinus Neoplasms/diagnosis , Nasal Cavity/pathology , Neurilemmoma/pathology , Neurilemmoma/surgery , Nose Neoplasms/pathology , Nose Neoplasms/surgery , Paranasal Sinus Neoplasms/pathology , Paranasal Sinus Neoplasms/surgery , Paranasal Sinuses/pathology
12.
Rev. Fundac. Juan Jose Carraro ; 22(42): 41-45, 2017. ilus
Article in Spanish | LILACS | ID: biblio-908170

ABSTRACT

El schwannoma es un tumor benigno compuesto por células de Schwannque se localizan preferentemente en los pares craneales VIII y X, es de uncrecimiento lento. Son tumores muy bien delimitados ya que poseen una cápsula fibrosa y tienen consistencia blanda y gelatinosa. En este artículo le presentaremos un caso de un paciente de 56 años, que por hallazgo radiográfico presentaba un Schwannoma con origen en elNervio Dentario Inferior, rama terminal del Trigémino.


Subject(s)
Male , Humans , Middle Aged , Mandibular Nerve/physiopathology , Neurilemmoma/diagnostic imaging , Neurilemmoma/etiology , Neurilemmoma/pathology , Follow-Up Studies , Histological Techniques , Oral Surgical Procedures/methods , Tomography, X-Ray Computed/methods
13.
Acta ortop. mex ; 30(6): 320-322, nov.-dic. 2016. graf
Article in Spanish | LILACS | ID: biblio-949772

ABSTRACT

Resumen: El schwannoma es un tumor benigno derivado de la vaina neural de las células de Schwann. Habitualmente suele ser pequeño y solitario, siendo más frecuente en los pares craneales y en la médula espinal, aunque menos frecuente en las extremidades. Se han descrito casos de aparición en las extremidades (principalmente superiores). Son muy raros los casos de schwannomas de gran tamaño sin relación con la neurofibromatosis. Presentamos a una paciente de 25 años de edad, con un schwannoma gigante que invadía desde la región isquiática al tríceps sural.


Abstract: A schwannoma is a benign nerve sheath tumor derived from Schwann cells. They are usually small and solitary tumors more frequently localized in cranial nerves and the spinal cord and rarely in the limbs. Some cases have been reported involving extremities (mainly the upper ones) but with a small size. Cases of big size schwannomas unrelated to a neurofibromatosis are very rare. We report the case of a 25 year old patient, with a giant schwannoma which invaded the ischiatic region reaching the triceps surae.


Subject(s)
Humans , Adult , Nerve Sheath Neoplasms/diagnosis , Nerve Sheath Neoplasms/pathology , Neurilemmoma/diagnosis , Neurilemmoma/pathology , Muscle, Skeletal/pathology , Neoplasm Invasiveness
14.
Arq. bras. oftalmol ; 79(4): 258-260, July-Aug. 2016. tab, graf
Article in English | LILACS | ID: lil-794580

ABSTRACT

ABSTRACT To our knowledge, we report the first case of an extraconal orbital cystic schwannoma in Brazilian literature. The tumor grew slowly and progressively and was associated with minimal eccentric proptosis and diplopia. The radiologic study (orbital computed tomography) revealed a rounded, encapsulated, and extraconal cystic mass in the superior medial region of the right orbit in the supraorbital and supratrochlear nerve topography. An anterior orbitotomy with full excision of the tumor was performed, and the histopathology examination revealed that the tumor was a schwannoma. After the surgery, the patient experienced total remission of his symptoms.


RESUMO Os autores relatam o primeiro caso de schwannoma orbitário extraconal cístico relatado na literatura brasileira. O tumor apresentou aparecimento lento e progressivo, associado a proptose excêntrica e diplopia leves. O exame de imagem (tomografia computadorizada de órbita) revelou uma lesão nodular, arredondada, capsulada, extracônica, cística, na região súpero-medial de órbita direita, na topografia do nervo supraorbitário e supra-troclear. O paciente foi submetido à orbitotomia por via anterior, com exérese integral da tumoração. O exame histopatológico revelou o diagnóstico de schwannoma. Após a cirurgia, o paciente teve regressão total dos sintomas.


Subject(s)
Humans , Male , Middle Aged , Orbital Neoplasms/pathology , Dermoid Cyst/pathology , Neurilemmoma/pathology , Brazil , Orbital Neoplasms/surgery , Orbital Neoplasms/diagnostic imaging , Tomography, X-Ray Computed , Treatment Outcome , Dermoid Cyst/surgery , Dermoid Cyst/diagnostic imaging , Diagnosis, Differential , Neurilemmoma/surgery , Neurilemmoma/diagnostic imaging
15.
Arq. neuropsiquiatr ; 73(6): 531-543, 06/2015. tab, graf
Article in English | LILACS | ID: lil-748178

ABSTRACT

Part 1 of this guideline addressed the differential diagnosis of the neurofibromatoses (NF): neurofibromatosis type 1 (NF1), neurofibromatosis type 2 (NF2) and schwannomatosis (SCH). NF shares some features such as the genetic origin of the neural tumors and cutaneous manifestations, and affects nearly 80 thousand Brazilians. Increasing scientific knowledge on NF has allowed better clinical management and reduced rate of complications and morbidity, resulting in higher quality of life for NF patients. Most medical doctors are able to perform NF diagnosis, but the wide range of clinical manifestations and the inability to predict the onset or severity of new features, consequences, or complications make NF management a real clinical challenge, requiring the support of different specialists for proper treatment and genetic counseling, especially in NF2 and SCH. The present text suggests guidelines for the clinical management of NF, with emphasis on NF1.


A primeira parte desta diretriz abordou o diagnóstico diferencial das neurofibromatoses (NF): neurofibromatose do tipo 1 (NF1), neurofibromatose do tipo 2 (NF2) e schwannomatose (SCH). As NF compartilham algumas características, como a origem neural dos tumores e sinais cutâneos, e afetam cerca de 80 mil brasileiros. O aumento do conhecimento científico sobre as NF tem permitido melhor manejo clínico e redução da morbidade das complicações, resultando em melhor qualidade de vida para os pacientes com NF. A maioria dos médicos é capaz de realizar o diagnóstico das NF, mas a variedade de manifestações clínicas e a dificuldade de se prever o surgimento e a gravidade de complicações, torna o manejo da NF um desafio para o clínico e envolve diferentes especialistas para o tratamento adequado e aconselhamento genético, especialmente a NF2 e a SCH. O presente texto sugere algumas orientações para o acompanhamento dos portadores de NF, com ênfase na NF1.


Subject(s)
Humans , Neurilemmoma/therapy , Neurofibromatoses/therapy , Neurofibromatosis 1/therapy , /therapy , Skin Neoplasms/therapy , Disease Management , Neurilemmoma/complications , Neurilemmoma/pathology , Neurofibromatoses/complications , Neurofibromatoses/pathology , Neurofibromatosis 1/complications , Neurofibromatosis 1/pathology , /complications , /pathology , Optic Nerve Glioma/pathology , Optic Nerve Glioma/therapy , Risk Factors , Skin Neoplasms/complications , Skin Neoplasms/pathology
16.
Yonsei Medical Journal ; : 1735-1737, 2015.
Article in English | WPRIM | ID: wpr-70395

ABSTRACT

We report herein a case of benign cardiac schwannoma in the interatrial septum. A 42-year-old woman was transferred from a clinic because of cardiomegaly as determined by chest X-ray. A transthoracic echocardiography and chest computed tomography examination revealed a huge mass in the pericardium compressing the right atrium, superior vena cava (SVC), left atrium, and superior pulmonary vein. To confirm that the tumor originated from either heart or mediastinum, cine magnetic resonance imaging was performed, but the result was not conclusive. To facilitate surgical planning, we used 3D printing. Using a printed heart model, we decided that tumor resection under cardiopulmonary bypass (CPB) through sternotomy would be technically feasible. At surgery, a huge tumor in the interatrial septum was confirmed. By incision on the atrial roof between the aorta and SVC, tumor enucleation was performed successfully under CPB. Pathology revealed benign schwannoma. The patient was discharged without complication. 3D printing of the heart and tumor was found to be helpful when deciding optimal surgical approach.


Subject(s)
Adult , Atrial Septum/pathology , Cardiomegaly/etiology , Cardiopulmonary Bypass , Female , Heart Atria/pathology , Heart Neoplasms/pathology , Humans , Magnetic Resonance Imaging, Cine , Neurilemmoma/pathology , Printing, Three-Dimensional , Sternotomy , Treatment Outcome , Vena Cava, Superior/pathology
17.
Article in English | IMSEAR | ID: sea-154458

ABSTRACT

Schwannomas arising from vagus nerve sheath are rare mediastinal neurogenic tumours. Schwannomas usually arise from left hemithorax. Unlike a hamartoma, radiologically, calcification is rarely seen in schwannomas. We present the rare case of an ancient schwannoma arising from vagus nerve sheath from the right hemithorax presenting with gross calcification.


Subject(s)
Adult , Calcinosis/etiology , Hamartoma/diagnosis , Humans , Male , Neurilemmoma/diagnosis , Neurilemmoma/pathology , Neurilemmoma/diagnostic imaging , Peripheral Nervous System Neoplasms/diagnosis , Peripheral Nervous System Neoplasms/pathology , Peripheral Nervous System Neoplasms/diagnostic imaging
19.
Medicina (B.Aires) ; 74(3): 225-226, jun. 2014. ilus
Article in Spanish | LILACS | ID: lil-734370

ABSTRACT

El schwannoma (neurilemoma) es un tumor benigno de lento crecimiento originado en la vaina de Schwann, cuya localización en la cavidad torácica es excepcional. En general es asintomático y se descubre en forma incidental, aunque puede ocasionar síntomas cuando la lesión crece o invade estructuras subyacentes. Su importancia radica en la posibilidad de confusión con tumores malignos. Presentamos una paciente con dolor torácico de evolución prolongada causado por un schwannoma. La imagen tomográfica es sugestiva de tumor extrapulmonar, por ello el schwannoma en esta localización debe ser considerado en el diagnóstico diferencial de tumores pleurales metastásicos o primarios como el lipoma, el tumor fibroso solitario y el mesotelioma.


The schwannoma (neurilemmoma) is a slow-growing benign tumor originating from Schwann sheath whose location in the chest cavity is exceptional. It is generally asymptomatic and is discovered incidentally but can cause symptoms when the lesion grows or invade underlying structures. Its importance lies in the possibility of confusion with malignant tumors. We present a patient who complains of chest pain caused by a prolonged course schwannoma. The tomographic image is suggestive of extrapulmonary tumor, so the schwannoma in this location should be considered in the differential diagnosis of metastatic or primary pleural tumors such as lipoma, solitary fibrous tumor and mesothelioma.


Subject(s)
Humans , Female , Aged , Thoracic Neoplasms/pathology , Neurilemmoma/pathology , Thoracic Neoplasms/complications , Chest Pain/etiology , Tomography , S100 Proteins/analysis , Diagnosis, Differential , Neurilemmoma/complications
20.
Rev. bras. oftalmol ; 73(2): 117-119, Mar-Apr/2014. tab, graf
Article in Portuguese | LILACS | ID: lil-718427

ABSTRACT

Schwannoma é um tumor neurogênico benigno raro, originário das células de Schwann da bainha de mielina dos nervos periféricos. Sua localização nos tecidos oculares não é comum, sendo a órbita o local afetado com maior frequência e o acometimento das pálpebras é muito raro. Há poucos relatos descritos na literatura sobre Schwannoma palpebral, apenas dois em crianças. Este é, em nosso conhecimento, o primeiro caso relatado no Brasil.


Schwannoma is a rare benign neurogenic tumor. It arises from Schwann cells located at the myelin sheath of peripheral nerves. Its incidence is frequently associated with the orbit. Ocular tissues in general and eyelids in particular are rarely affected. Very few reports can be found in the literature describing eyelid schwannomas. Amongst these, we have found only two describing it affecting children. To our knowledge, this is the first case report about eyelid schwanomma in Brazil - and it involves a child.


Subject(s)
Humans , Female , Child , Eyelid Neoplasms/pathology , Neurilemmoma/pathology , Ophthalmologic Surgical Procedures , Biopsy , Immunohistochemistry , S100 Proteins/analysis , Eyelid Neoplasms/surgery , Eyelid Neoplasms/chemistry , Neurilemmoma/surgery , Neurilemmoma/chemistry
SELECTION OF CITATIONS
SEARCH DETAIL