ABSTRACT
Los neurofibromas laríngeos (NFL) son tumores benignos poco frecuentes de localización principalmente supraglótica. Se manifiestan con síntomas obstructivos de la vía aérea. El tratamiento es la resección completa del tumor mediante abordaje endoscópico; se reserva la cirugía abierta para tumores de gran extensión. Se presenta el caso de un paciente pediátrico con localización atípica de NFL asociado a neurofibromatosis tipo 1 (NF1). Se realizó resección endoscópica del tumor y la anatomía patológica informó neurofibroma plexiforme. Es importante sospechar de esta patología en todo niño con estridor inspiratorio atípico progresivo. Se sugiere seguimiento a largo plazo por la alta probabilidad de recidiva.
Laryngeal neurofibromas (LNFs) are rare benign tumors mainly located in the supraglottis. LNFs occur with airway obstruction symptoms. The treatment is complete resection via an endoscopic technique; the open approach is reserved for large tumors. Here we describe the case of a pediatric patient with LNF of atypical location associated with neurofibromatosis type 1 (NF-1). The tumor was resected with an endoscopic technique, and the pathological study reported a plexiform neurofibroma. It is important to suspect this condition in any child with atypical, progressive inspiratory stridor. Long-term follow-up is recommended due to the high rate of recurrence
Subject(s)
Humans , Male , Infant , Neurofibromatosis 1/complications , Neurofibromatosis 1/diagnosis , Neurofibromatosis 1/pathology , Neurofibroma, Plexiform/surgery , Neurofibroma, Plexiform/complications , Neurofibroma, Plexiform/diagnosis , Larynx/pathology , Respiratory Sounds/etiology , EndoscopyABSTRACT
Se presenta el caso de una paciente de 36 años de edad con antecedente patológico de enfermedad de Von Reklinghausen, quien fue asistida en el Servicio de Cirugía General del Centro Hospitalario de Kossodô en Burkina Faso por presentar un tumor gigante en la región posterior del muslo derecho. Los exámenes complementarios confirmaron el presunto diagnóstico de neurofibroma plexiforme gigante del nervio ciático. Durante el procedimiento quirúrgico se extirpó un tumor infrecuente cuyo peso excedió los 22,5 kg. Con el tratamiento rehabilitador posoperatorio del miembro operado la paciente evolucionó satisfactoriamente y se le dio el alta hospitalaria 7 días después.
The case report of a 36 years patient with pathological history of Von Reklinghausen disease is presented. She was assisted in the General Surgery Service of the Hospital Center from Kossodô in Burkina Faso presenting a giant tumor in the back region of the right thigh. The complementary exams confirmed the presumed diagnosis of giant plexiform neurofibroma of the sciatic nerve. During the surgical procedure an uncommon tumor was removed which weight exceeded the 22.5 kg. With the postoperative rehabilitative treatment of the operated member the patient had a favorable clinical course and she was discharged from the hospital 7 days later.
Subject(s)
Neurofibroma, Plexiform/surgery , Neurofibroma, Plexiform/diagnosis , Neurofibroma, Plexiform/rehabilitation , Sciatic Nerve , NeurofibromatosesABSTRACT
Neurofibromas can occur anywhere in the body, but they usually involve the head, neck, pelvis, and extremities. Abdominal visceral involvement is rare, and intrahepatic involvement is even less common. We describe a patient who suffered from plexiform neurofibromatosis with liver involvement. A 49-year-old man, who had previously been diagnosed with neurofibromatosis, underwent esophagogastroduodenoscopy and abdominal ultrasonography for screening purposes. Esophagogastroduodenoscopy showed grade 2 esophageal varices and abdominal ultrasonography showed conglomerated nodules with echogenic appearances in the perihepatic space. Magnetic resonance imaging showed presumed plexiform neurofibroma involving the lesser sac and hepatic hilum and encasing the common hepatic artery celiac trunk and superior mesenteric artery left portal triad. We report an unusual case of portal hypertension attributed to the compressive narrowing of the portal vein by presumed as plexiform neurofibroma at the lesser sac and hepatic hilum.
Subject(s)
Humans , Male , Middle Aged , Abdomen/diagnostic imaging , Endoscopy, Digestive System , Esophageal and Gastric Varices/pathology , Hepatic Artery/diagnostic imaging , Hypertension, Portal/diagnosis , Liver/diagnostic imaging , Magnetic Resonance Imaging , Neurofibroma, Plexiform/diagnosis , Tomography, X-Ray Computed , UltrasonographyABSTRACT
Introduction Laryngeal neurofibromas are extremely rare, accounting for only 0.03 to 0.1% of benign tumors of the larynx. Objectives To report the first case of massive neck plexiform neurofibroma with intralaryngeal (supraglottic) extension in a 5-year-old boy with neurofibromatosis type 1 and to describe its treatment. Resumed Report This massive plexiform neurofibroma was surgically removed, relieving its significant respiratory obstructive symptoms without recurrence to date. Conclusion Massive neck plexiform neurofibroma with supraglottic part was found in a child with neurofibromatosis type 1; it should be included in differential diagnosis of stridor and neck mass in children. It was diagnosed and removed in early in childhood without recurrence.(AU)
Subject(s)
Humans , Child, Preschool , Diagnosis, Differential , Neurofibroma, Plexiform/diagnosis , Neurofibromatosis 1/genetics , Diagnostic Imaging , Laryngoscopy , Magnetic Resonance ImagingABSTRACT
Neurofibromas (NF) are seen either as a solitary lesion or as part of the generalized syndrome of NF (NF-1, also known as Von Recklinghausen disease of the skin). In plexiform neurofibroma (PN), there is proliferation of Schwann cells from the inner aspect of the nerve sheath, thereby resulting in an irregularly thickened, distorted, tortuous structure. Oral involvement by a solitary and peripheral PN in patients with no other signs of NF is rarely seen. It is reported that only 4-7% of patients affected by NF display oral manifestations. A solitary PN in a patient with no other symptoms is a diagnostic challenge, more so when the location of the lesion is one of the rarest sites.
Subject(s)
Child , Edema/diagnosis , Edema/etiology , Edema/pathology , Humans , Lip/pathology , Male , Neurofibroma, Plexiform/anatomy & histology , Neurofibroma, Plexiform/complications , Neurofibroma, Plexiform/diagnosis , Neurofibroma, Plexiform/pathology , Neurofibromatosis 1/anatomy & histology , Neurofibromatosis 1/complications , Neurofibromatosis 1/diagnosis , Neurofibromatosis 1/pathologyABSTRACT
Solitary gastric plexiform neurofibroma (PN) is a very rare tumor that originates from the peripheral nerves. PN is a rare cause of pyloric obstruction. A 58 year-old man, reported epigastric discomfort, nausea, and vomiting for two months. Upper digestive endoscopy showed a moderate/accentuated pyloric stenosis. Computed tomography (CT) and echoendoscopy revealed a pyloric nodule. The patient underwent to distal gastrectomy. Macroscopically, a gray nodule measuring 1.1 × 1.0 × 1.0 cm was identified. Using microscopy, a benign tumor composed of enlarged tortuous nerve fascicles showing a neurofibromatous proliferation with mild atypia and myxoid matrix was found. The lesion showed positive immunoexpression for S100, Leu7, and epithelial membrane antigen (EMA), and was negative for CD117, DOG-1, desmin, and smooth muscle actin. The diagnosis of PN was then determined...
Neurofibroma plexiforme (NP) gástrico solitário é um tumor muito raro originado a partir dos nervos periféricos. É uma causa rara de obstrução pilórica. Paciente masculino, 58 anos, relatava desconforto epigástrico, náuseas e vômitos durante dois meses. A endoscopia digestiva superior mostrou estenose moderada/acentuada do piloro. Tomografia computadorizada (TC)/ ecoendoscopia revelaram nódulo no piloro. O paciente foi submetido a gastrectomia distal. À macroscopia, identificou-se nódulo cinzento medindo 1.1 × 1 × 1 cm. À microscopia, encontrou-se tumor benigno composto por fascículos nervosos dilatados/ tortuosos, exibindo proliferação neurofibromatosa com atipias leves e matriz mixoide. A lesão exibiu imunoexpressão positiva para S100, Leu7 e antígeno da membrana epitelial (EMA), e negatividade para CD117, DOG-1, desmina e actina de músculo liso. O diagnóstico de PN foi, então, determinado...
Subject(s)
Humans , Male , Middle Aged , Neurofibroma, Plexiform/diagnosis , Pylorus/pathology , Stomach Neoplasms/pathology , Gastrointestinal Neoplasms/diagnosis , Tomography, X-Ray ComputedABSTRACT
A neurofibromatose tipo 1 é um transtorno neurocutâneo congênito caracterizado pela proliferação de tumores benignos da bainha dos nervos periféricos acompanhada de expressão inconstante a nível cutâneo, ósseo e nervoso. A evolução da doença é variável e dependente de possíveis complicações, sendo o prognóstico, em sua ausência, favorável. Os neurofibromas plexiformes são relativamente frequentes, constituindo complicação potencialmente grave, dependendo de sua localização e invasão de estruturas vizinhas. A transformação maligna desses tumores é rara, afetando 3 a 5% dos pacientes. O objetivo do estudo foi apresentar caso grave de neurofibromatose 1 com resultado fatal para o paciente, chamando a atenção para o diagnóstico das possíveis complicações. Paciente do gênero masculino, 20 anos, internado por massa cervical de etiologia a esclarecer. Com antecedentes de displasia tibial e duas exéreses de massas cutâneas não especificadas. Ao exame objetivo, apresentava múltiplas manchas café com leite, efélides axilares e inguinais, e nódulos na íris bilateralmente. Estabeleceu-se o diagnóstico de neurofibromatose1 em paciente sem história familiar, mediante dois resultados histopatológicos compatíveis. O estudo da massa revelou neurofibroma plexiforme cervicotorácico com malignização neurossarcomatosa, invadindo a veia jugular interna direita, artéria subclávia e plexo braquial, condicionando complicações hemorrágicas, posteriormente fatais. Apesar dos neurofibromas serem tumores benignos, estima-se que a esperança de vida dos pacientes com neurofibromatose 1 seja 15 anos menor do que a da população geral. A existência de complicações potencialmente fatais tornam indispensáveis a monitorização constante e o seguimento evolutivo das manifestações dessa doença
Neurofibromatosis type 1 is a congenital neurocutaneous disorder characterized by proliferation of benign peripheral nerve sheath tumors together with inconstant, cutaneous, osseous and neurological expression. Disease progression is variable and depends on eventual complications, with prognosis being favorable when they are absent. Plexiform neurofibroma is a relatively frequent and potentially severe complication, depending on its localization and surrounding structures. Malignant transformation is rare, affecting 3 to 5% of patients. The objective of this study was to present a severe case of neurofibromatosis 1, with fatal result for the patient, addressing the diagnosis of possible complications. Male patient, 20 years old, admitted due to cervical bulk of unknown origin, with a history of tibial dysplasia and two excisions of other unspecified cutaneous bulks. The physical examination showed multiple cafe-au-lait spots, axillary and inguinal ephelides, and bilateral iris Lisch nodules. Diagnosis of neurofibromatosis 1 was established in a patient without a family history, according to two compatible histopatological results. The investigation of the bulk demonstrated a plexiform cervical-thoracic neurofibroma with invasion of right internal jugular vein, subclavian artery and brachial plexus, with neurosarcomatous malignization, causing fatal hemorrhagic complications. In spite of neurofibromas being benign tumors, individuals with neurofibromatosis 1are predicted to have a lifespan of approximately 15 years less than the general population. Existence of potentially fatal complications makes close surveillance and follow-up of clinical manifestations crucial.
Subject(s)
Humans , Male , Adult , Cafe-au-Lait Spots , Neurofibroma, Plexiform/diagnosis , Neurofibromatosis 1/diagnosisABSTRACT
A neurofibromatose tipo 1 (NF1) é a forma mais comum das facomatoses autossômicas dominantes, com uma incidência de 1 em 2.500 a 1 em 3.000 ao nascimento. Clinicamente, a NF1 é caracterizada por manchas café com leite, efélides, neurofibroma da pele, neurofibroma plexiforme, defeitos ósseos, nódulos de Lisch e tumores do sistema nervoso central. O neurofibroma plexiforme, um raro tumor exclusivo de pacientes com NF1, é um tumor benigno da bainha dos nervos periféricos que se espalha sob a pele ou profundamente no corpo. O diagnóstico diferencial da NF1 inclui outras formas de neurofibromatose, afecções com manchas café com leite ou com alterações pigmentares confundidas com manchas café com leite. Uma mulher de 28 anos foi admitida no Hospital Universitário de Santa Maria, apresentando uma massa com grande aumento em seu braço direito com 24 anos de evolução. O aumento se desenvolveu em uma mancha café com leite que estava presente desde o nascimento. Não havia história familiar de neurofibromatose. Foi realizado diagnóstico clínico de NF1 com neurofibroma plexiforme do braço direito
Neurofibromatosis type 1 (NF1) is the most common form of autosomal dominant phakomatoses with an incidence of 1 in 2,500 to 1 in 3,000 at birth. Clinically, NF1 is characterized by café au lait spots, ephelides, skin neurofibroma, plexiform neurofibroma, bone defects, Lisch nodules, and tumors of the central nervous system. Plexiform neurofibroma, a rare tumor unique to patients with NF1, is a benign tumor of peripheral nerve sheath that spreads under the skin or deep in the body. The differential diagnosis of NF1 includes other forms of neurofibromatosis, conditions with café au lait spots or pigment changes confused with café au lait spots. A 28-year-old woman was admitted to the University Hospital of Santa Maria with a largely increased mass in her right arm with 24 years of evolution. The increase developed from a cafe au lait spot that was present since birth. There was no family history of neurofibromatosis. Clinical diagnosis of NF1 with plexiform neurofibroma of the right arm was made
Subject(s)
Humans , Female , Adult , Neurofibroma, Plexiform/diagnosis , Neurofibroma, Plexiform/pathologyABSTRACT
OBJETIVO: Avaliar a prevalência de neurofibroma plexiforme em crianças e adolescentes com neurofibromatose tipo 1 e seu potencial de transformação maligna. MÉTODOS: Estudo retrospectivo realizado através da análise do banco de dados do Centro Nacional de Neurofibromatose, coletado nos seguintes serviços de referência entre 1996 e 2004: Instituto de Dermatologia Prof. Rubem David Azulay da Santa Casa de Misericórdia do Rio de Janeiro, Instituto de Pediatria e Puericultura Martagão Gesteira da Universidade Federal do Rio de Janeiro e Departamento de Imunologia e Microbiologia da Faculdade de Medicina de Teresópolis. RESULTADOS: Nesse período, foram atendidos 104 pacientes com idade de 1 a 17 anos e diagnóstico clínico de neurofibromatose tipo 1, sendo 53 do sexo masculino e 51 do sexo feminino. Destes, 28 pacientes (15 masculinos e 13 femininos) apresentaram neurofibroma plexiforme (26,9 por cento). Divididos por faixa etária, observou-se 21,42 por cento (seis) entre 1 e 5 anos; 35,71 por cento (10) entre 6 e 12 anos e 42,85 por cento (12) entre 13 e 17 anos. Dos 104 pacientes estudados, dois evoluíram para tumor maligno da bainha do nervo periférico (1,92 por cento). CONCLUSÕES: Os neurofibromas plexiformes são manifestações relativamente comuns em pacientes com neurofibromatose tipo 1 e podem ser causa de aumento significativo da morbimortalidade entre os pacientes. Concluímos, em nosso estudo, que a freqüência de neurofibroma plexiforme e de seu potencial de malignização na população observada está em conformidade com dados da literatura internacional.
OBJECTIVE: To assess prevalence of plexiform neurofibroma in children and adolescents with type I neurofibromatosis and its malignant potential. METHODS: A retrospective study was conducted through analysis of the database at Centro Nacional de Neurofibromatose [Brazilian Neurofibromatosis Center], collected from the following reference services between 1996 and 2004: Instituto de Dermatologia Prof. Rubem David Azulay da Santa Casa de Misericórdia do Rio de Janeiro, Instituto de Pediatria e Puericultura Martagão Gesteira da Universidade Federal do Rio de Janeiro and Department of Immunology and Microbiology at Faculdade de Medicina de Teresópolis. RESULTS: Over that period, 104 patients aged between 1-17 years were admitted with clinical diagnosis of type I neurofibromatosis. Of these, 53 were male and 51 were female, and 28 patients (15 male and 13 female) had plexiform neurofibroma (26.9 percent). Division by age group resulted in 21.42 percent (six) between 1-5 years; 35.71 percent (10) between 6-12 years and 42.85 percent (12) between 13-17 years. Of the 104 patients, two developed a malignant peripheral nerve sheath tumor (1.92 percent). CONCLUSIONS: Plexiform neurofibromas are relatively common manifestations in patients with type I neurofibromatosis and may be a cause of significant increase in morbidity and mortality among patients. In this study, we conclude that frequency of plexiform neurofibroma and its malignant potential in the population studied is in agreement with data from the international literature.
Subject(s)
Adolescent , Child , Child, Preschool , Female , Humans , Infant , Male , Neurofibroma, Plexiform/epidemiology , Neurofibromatosis 1/epidemiology , Neurofibroma, Plexiform/diagnosis , Prevalence , Retrospective StudiesABSTRACT
Los tumores neurogénicos de cuello son poco habituales. Esta escasa frecuencia explica el motivo por el cual, usualmente, no se postula su diagnóstico. En una masa cervical ubicada en la región de los nervios craneales, plexo cervical, cadena simpática cervical o nervios periféricos mayores, debe considerarse un origen neurogénico. Una resección no planificada puede ocasionar secuelas neurológicas que en algunas ocasiones podrían evitarse. Presentamos 3 casos tratados en el Servicio de Cirugía del Hospital de Valdivia, describiendo las principales características clínicas e histológicas de cada uno de ellos, su tratamiento y evolución. Además, se entrega una revisión actualizada en relación a esta rara e infrecuente patología
Subject(s)
Humans , Male , Adolescent , Adult , Head and Neck Neoplasms/surgery , Neurilemmoma/surgery , Neurofibroma, Plexiform/surgery , Clinical Evolution , Head and Neck Neoplasms/complications , Head and Neck Neoplasms/diagnosis , Head and Neck Neoplasms/pathology , Neurilemmoma/complications , Neurilemmoma/diagnosis , Neurilemmoma/pathology , Neurofibroma, Plexiform/complications , Neurofibroma, Plexiform/diagnosis , Neurofibroma, Plexiform/pathology , Postoperative Complications , Surgical Procedures, Operative/methodsABSTRACT
Se presentan dos casos de pacientes con Neurofibromatosis tipo 1 (NF1), un caso de sexo femenino y otro de sexo masculino, con antecedentes heredofamiliares negativos de la enfermedad, pero con clínica desde el nacimiento de manchas café con leche múltiples y manchas en "confeti" en la axila e ingle. El paciente masculino presentaba desde el nacimiento una tumoración en región fronto parietal izquierda con proptosis ocular, cuya biopsia reportó neurofibroma plexiforme. La paciente femenina cursó con problemas óseos tipo pseudoartrosis de radio y escoliosis, además de nódulos de Lisch en el iris. Estos pacientes reúnen criterios actuales para clasificarlos como portadores de neurofibromatosis 1. Se revisan los criterios diagnósticos de las neurofribromatosis tipo 1 y 2 y se discuten los hallazgos de los pacientes en el contexto de su enfermedad. (Rev Cost Cienc Méd 1999; 20(1-2): 69-74) PALABRAS CLAVE: Neurofibromatosis, Manchas café con leche, Manchas en "confeti", Nódulos de Lisch, Escoliosis, Neurofibroma Plexiforme, Glioma óptimo