Encefalitis límbica asociada a secreción inadecuada de hormona antidiurética. Reporte de un caso y revisión de la literatura / Limbic encephalitis associated with inappropriate secretion of antidiuretic hormone. A case report and literature review / Encefalite límbica associada à secreção inapropriada de hormônio antidiurético. Relato de caso e revisão da literatura

La encefalitis límbica (EL) autoinmune es una afección neurológica infrecuente de curso subagudo con manifestaciones neuropsicológicas. Actualmente el tratamiento inmunoterápico agudo o de mantenimiento es dirigido según el anticuerpo neural acompañante y la presencia o ausencia de cáncer. Presentamos el caso de una mujer de 52 años con hipotiroidismo autoinmune, síndrome de secreción inadecuada de hormona antidiurética (SIADH) e hiponatremia (hipoNa) persistente, con evolución progresiva de perdida de la memoria y crisis distónicas faciobraquiales (DFBC) a quien se le realiza un diagnóstico oportuno de encefalitis límbica. Recibió tratamiento intravenoso combinado en base a corticoides e inmunoglobulina con buena respuesta y morbilidad mínima neuropsicológica. El reconocimiento de esta patología permite un diagnóstico y tratamiento temprano, imprescindible para mejorar el pronóstico de estos pacientes.

Autoimmune limbic encephalitis is a rather unusual neurological condition with subacute progression and neuropsychological symptoms. Currently, acute or maintenance treatment with immunotherapy is targeted depending on the accompanying neural specific antibody and the presence or absence of cancer. The study presents the case of a 52-year-old woman suffering from autoimmune hypothyroidism, syndrome of inappropriate secretion of anti-diuretic hormone (SIADH) and persistent hyponatremia, with progressive evolution which involved memory loss and faciobrachial dystonic seizures (FBDS). She was timely diagnosed with limbic encephalitis and was treated with intravenous combined corticosteroids and immunoglobulin therapy. Response was good, with minimum neuropsychological. Recognizing this condition allows for early diagnosis and treatment, what is key to improve the prognosis of these patients.

A encefalite límbica (LE) autoimune é uma condição neurológica rara de curso subagudo com manifestações neuropsiquiátrica. Atualmente, o tratamento com imunoterapia aguda ou de manutenção é orientado de acordo com o anticorpo neural e a presença ou ausência de câncer. Apresentamos o caso de uma mulher de 52 anos com hipotireoidismo autoimune, síndrome de secreção inapropriada de hormônio antidiurético e hiponatremia persistente, com evolução progressiva da perda de memória e crises distônicas faciobraquiais que foi diagnosticada oportunamente como encefalite límbica. Recebeu tratamento endovenoso combinado à base de corticoide e imunoglobulina com boa resposta e morbidade neuropsiquiátrica mínima. O reconhecimento desta patologia permite um diagnóstico e tratamento precoces, essenciais para melhorar o prognóstico desses pacientes.

Encefalitis límbica: clínica, patogenia y problemas diagnósticos / Limbic encephalitis: clinic, pathogenesis and diagnostic problems

La encefalitis límbica es una enfermedad infrecuente y potencialmente grave, que puede o no ser paraneoplásica y se caracteriza por déficit de la memoria reciente, alteraciones psiquiátricas y convulsiones. De origen autoinmunitario, está asociada a anticuerpos séricos e intratecales contra antígenos neuronales intracelulares y de superficie, con especial afectación de zonas límbicas. En este artículo se revisan aspectos históricos y epidemiológicos, patogenia, síndromes más frecuentes y mejor delimitados, histopatología y estudios complementarios. Se repasan también las dificultades del diagnóstico diferencial y la necesidad de descartar siempre un tumor subyacente. La detección de autoanticuerpos neuronales es importante para el diagnóstico, la planificación terapéutica y el pronóstico. La inmunoterapia y, si corresponde, el tratamiento de la neoplasia son cruciales para lograr una recuperación neurológica sustancial. La encefalitis límbica es una entidad probablemente subdiagnosticada, con un pronóstico más favorable si se trata de forma temprana. El actual conocimiento de su patogenia puede además aportar claridad para la mejor comprensión de otros síndromes neurológicos y psiquiátricos que puedan compartir mecanismos autoinmunitarios, como algunos trastornos psicóticos y epilepsias farmacorresistentes. (AU)

Limbic encephalitis is a rare and potentially serious disease, which may or may not be paraneoplastic and is characterized by recent memory deficits, psychiatric disturbances and seizures. Of autoimmune origin, it is associated with serum and intrathecal antibodies against intracellular and surface neuronal antigens, with special involvement of limbic areas. This article reviews historical and epidemiological aspects, pathogenesis, more frequent and better defined syndromes, histopathology and complementary studies. The difficulties of differential diagnosis and the need to always rule out an underlying tumor are also reviewed. Detection of neuronal autoantibodies is important for diagnosis, therapeutic planning and prognosis. Immunotherapy and, if appropriate, neoplasm treatment, are crucial to achieve substantial neurological recovery. Limbic encephalitis is probably an underdiagnosed entity, with a more favorable prognosis if treated early. The current knowledge of its pathogenesis may also provide clarity for a better understanding of other neurological and psychiatric syndromes that may share autoimmune mechanisms, such as some psychotic disorders and drug-resistant epilepsies. (AU)

Diagnóstico de encefalite límbica não paraneoplásica de etiologia imunomediada: estudo de caso e revisão de literatura / Diagnosis of immune-mediated non-paraneoplastic limbic encephalitis: case report and literature review

A encefalite límbica vem sendo descrita como um distúrbio neurológico raro, que afeta seletivamente as estruturas do sistema límbico. Clinicamente, é caracterizada como uma desordem neurológica debilitante, que se desenvolve como encefalopatia rapidamente progressiva, causada por inflamação encefálica. Objetivamos aqui relatar um caso de encefalite do sistema límbico de provável etiologia autoimune para melhor conhecimento da comunidade médica, bem como averiguar métodos diagnósticos deste quadro. Paciente do sexo masculino, 59 anos, admitido em nosso serviço com queixa de confusão mental. O exame clínico evidenciou desorientação, disartria, paresia e parestesia no hemicorpo esquerdo, dificuldade de marcha, desvio de rima e histórico de epilepsia há 2 anos. No estudo por ressonância magnética do crânio, foram observadas extensas lesões que acometiam a região mesial do lobo temporal direito, todo o hipocampo e giro para-hipocampal direito, estendendo-se pelo fórnix até a porção posterior do hipocampo esquerdo, substância branca do lobo frontal bilateral. Mediante os resultados da investigação complementar, o paciente foi tratado com pulsoterapia de metilpredinisolona por 5 dias, resultando na regressão parcial dos sintomas. Atualmente, o paciente se encontra em seguimento ambulatorial para acompanhamento. A encefalite límbica é uma doença rara, porém muito importante de ser investigada e diagnosticada precocemente, uma vez que a progressão da doença pode causar incapacidade e sequelas irreversíveis.

Limbic encephalitis has been described as a rare neurological disorder affecting the limbic system structures selectively. Clinically, it is characterized as a debilitating neurological syndrome that develops as a quickly progressive encephalopathy caused by brain inflammation. This paper reports a case of limbic encephalitis, probably of autoimmune etiology, aiming to improve the knowledge of the medical community, and to promote a debate on diagnosis methods for this pathology. The patient is male, 59 years old, and was admitted at our service complaining of mental confusion. The clinical examination showed disorientation, dysarthria, left hemiparesis and paresthesia, gait difficulties, light asymmetrical smile, and history of epilepsy 2 years ago. The magnetic resonance imaging of skull showed extensive lesions affecting the mesial region of the right temporal lobe, the entire hippocampus, and right parahippocampal gyrus, extending through the fornix to the posterior portion of the left hippocampus, white matter of bilateral frontal lobe. Based on the complementary investigation results, the patient was treated with intravenous methylprednisolone for five days. Currently, he is being followed in the outpatient's department. Although being rare, limbic encephalitis shall be investigated and diagnosed early because its progression can lead to disability and irreversible sequelae

The poor insane Ophelia: reconsidering Ophelia syndrome / La pobre e insensata Ofelia: reconsiderando el síndrome de Ofelia

ABSTRACT The association between memory loss and Hodgkin's lymphoma has been given the eponym of Ophelia syndrome, in memory of Shakespeare's character in The Tragedy of Hamlet, Prince of Denmark. Nevertheless, there are differences between the disease and the character. Objective: To review the origins and uses of the eponym through an original article by pathologist Ian Carr, its relation to the character Ophelia, and the related autoantibodies. Methods: Historical narrative review. Results: Besides an eloquent description in the original article, Carr presaged the presence of autoantibodies, before they had been thoroughly researched. Since then, five different autoantibodies (mGluR5, Hu, NMDAR, SOX, PCA2) have been associated with Hodgkin's disease. It is interesting to note the divergent outcomes of Shakespeare's character and the patient in the original description by Carr, the latter recovering to lead a normal life, and the former deceased. Conclusions: Although there is little relationship between the fictional character and the syndrome, both imply the unintentional trigger of self-harm (suicide in one case, autoimmunity in the other), thus remaining associated.

RESUMO El síndrome de Ofelia describe la asociación entre pérdida de memoria y enfermedad de Hodgkin, en memoria del personaje de La Tragedia de Hamlet, Príncipe de Dinamarca, de William Shakespeare. Sin embargo, existen diferencias entre ambos. Objetivo: Revisar los orígenes y usos del epónimo a través del artículo original, su relación con el personaje y los autoanticuerpos relacionados. Métodos: Revisión narrativa histórica. Resultados: Además de una descripción elocuente, el artículo original prefigura los autoanticuerpos, cuando no se buscaban de rutina. Desde entonces, cinco distintos (mGluR5, Hu, NMDAR, SOX, PCA2) han sido asociados. Cabe destacar, que el desenlace del personaje y del paciente fueron diametralmente opuestos, el primero falleció y el segundo se recuperó, llevando una vida normal. Conclusiones: A pesar de la poca relación entre el personaje y el síndrome, ambos implican el desencadenamiento no intencional de daño auto-inflingido (suicidio en un caso, autoinmunidad en el otro), manteniendo así la adecuacía.

Analysis of Small Cell Lung Cancer with Paraneoplastic Limbic Encephalitis / 中国肺癌杂志

BACKGROUND@#The aim of this study was to investigate the clinical features of paraneoplastic limbic encephalitis (PLE) with small cell lung cancer (SCLC) and improve clinical diagnosis and treatment.@*METHODS@#The clinical data of 15 patients with SCLC combined with PLE from January 1980 to May 2017 were collected from Beijing Union Hospital. Their symptoms and laboratory data were analyzed and the prognosis of the patients was followed.@*RESULTS@#PLE is a rare disease, the incidence rate in SCLC is about 0.842%. The data may be underestimated because of misdiagnose or missed diagnosis; High incidence crowd of the disease is the middle-aged male smoker, the tumor-node-metastasis (TNM) stages of them are later than others; Typical neurological symptoms include varying degrees of short-term memory loss, seizures and varying degrees of mental disorders; neurological symptoms usually occur before the onset of cancer or respiratory symptoms appear, an average of about 2 months be taken from onset to diagnosis; Serum antibody (anti-Hu, GABA-R-Ab), cerebrospinal fluid, head magnetic resonance imaging (MRI) and electroencephalogram (EEG) of the patients has abnormalities; Videography, especially computed tomography (CT) is a good means of screening the primary tumor, pathology diagnosis mainly rely on bronchoscopy; The treatment of primary tumors can be more effective in alleviating the nervous system symptoms than immunotherapy.@*CONCLUSIONS@#Paraneoplastic limbic encephalitis is a rare paraneoplastic syndrome in nervous system caused by malignant neoplasms often characterized by facial neurological symptoms. The disease are usually associated with lung cancer (especially SCLC). Its nervous system symptoms occur earlier than the tumor diagnosis. Early diagnosis and treatment for primary tumors will increase the benefit.

Neurosyphilis Mimicking Limbic Encephalitis and Creutzfeldt-Jakob Disease

No abstract available.

Anti-Ma2-Associated Encephalitis with Axonal Sensorimotor Polyneuropathy

Anti-Ma2-associated encephalitis is one of the paraneoplastic limbic and brainstem encephalitis characterized by decreased consciousness, parkinsonism and the limitation of vertical eye movement. It is usually associated with non-small cell lung cancer in male and female or germ cell tumor in male. Herein, we report a case of atypical anti-Ma2-associated encephalitis which presented with axonal sensorimotor polyneuropathy.

Teratoma inmaduro (maligno) de ovario / Ovarian immature (malignant) teratoma

Resumen El teratoma inmaduro se describió por primera vez en 1960 y puede ser puro o estar mezclado con un componente maduro. Es la segunda neoplasia maligna más común de células germinales de todos los cánceres de ovario (representa <1%). Alrededor del 50% de los teratomas inmaduros puros del ovario ocurren en mujeres entre las edades de 10 y 20 años. Se debe considerar el tratamiento para preservar su fertilidad futura porque la mayoría de los tumores de células germinales de ovario son curables con la cirugía conservadora y la quimioterapia combinada de seguimiento. La mayoría de los pacientes diagnosticados con un teratoma inmaduro se curan de su enfermedad. Sin embargo en todas las pacientes, se recomienda un seguimiento cercano, particularmente en los primeros 2 años después del diagnóstico, donde existe una mayor probabilidad de recurrencia.

Abstract The immature teratoma was first described in 1960 and cay be pure or mixed with a mature component. It is the second most common malignant germ cell neoplasm of all ovarian cancers (representing <1%). About 50% of pure immature teratomas of the ovary occur in women between the ages of 10 and 20 years. Treatment should be considered to preserve future fertility because the majority of ovarian germ cell tumors are curable with conservative surgery and combined combination chemotherapy. Most patients diagnosed with an immature teratoma are cured of their disease. However, in all patients, we recommend close follow-up, particularly in the first 2 years after diagnosis, where there is a greater chance of recurrence.

Limbic Encephalitis Manifesting as Selective Amnesia and Seizure-like Activity: A Case Report

Limbic encephalitis (LE) is characterized by short-term memory loss, disorientation, agitation, seizures, and histopathological evidence of medial temporal lobe inflammation. Leucine-rich, glioma inactivated 1 (LGI-1) is an auto-antigen associated with LE. We report a 37-year-old male patient with LGI-1-related LE who presented with recurrent episodes of selective amnesia, seizure-like activity, confusion, and personality change. His symptoms were significantly improved with steroid therapy. Thorough differential diagnosis with consideration for autoimmune encephalitis should be in patients with presentation of symptoms, such as memory impairment, personality change and seizure-like activity, especially when other neurological diagnoses are excluded.

Anesthesia management in a case of Turner syndrome with anti-NMDA limbic encephalitis and multiple co-morbidities for repair of fracture femur / 대한마취과학회지

No abstract available.

Striatum Involvement in LGI1 Limbic Encephalitis

No abstract available.

Confusion, Faciobrachial Dystonic Seizures, and Critical Hyponatremia in a Patient with Voltage-Gated Potassium Channel Encephalitis / 가정의학회지

Autoimmune limbic encephalitis is a rare cause of encephalitic disease. It is associated with various target antigens and is difficult to diagnose, and experience with its treatment is limited. This case report describes a 69-year-old man, who presented with life-threatening hyponatremia and confusion, following several months of gradually worsening faciobrachial dystonic seizures. Faciobrachial dystonic seizures are a well-described feature classically observed in voltage-gated potassium channel autoimmune encephalitis. The presence of chronic hyponatremia without cognitive dysfunction, eventually culminating in an acute episode of encephalopathy and severe hyponatremia, is a pattern of natural history not previously documented in this condition.

Capgras syndrome associated with limbic encephalitis in a patient with diffuse large B-cell lymphoma / Síndrome de Capgras associada a Encefalite Límbica em um Paciente com Linfoma Difuso de Grandes Células B

We report the case of a patient with insidious onset and slowly progressive cognitive impairment, behavioral symptoms, temporal lobe seizures and delusional thoughts typical of delusional misidentification syndromes. Clinical presentation along with extensive diagnostic work-up revealed limbic encephalitis secondary to diffuse large B-cell lymphoma. The patient underwent immunotherapy with high-dose corticosteroid but no significant improvement was observed. No specific treatment for lymphoma was performed because the patient died of septic shock following a nosocomial respiratory infection. Delusional misidentification syndromes are an unusual and unique form of cognitive impairment in which a patient consistently misidentifies persons, places, objects, or events. Capgras syndrome is the most common subtype of this disorder, being defined by the recurrent and transient belief that someone close has been substituted by an imposter. These entities are generally associated with neurodegenerative diseases and psychiatric disturbances. Rare reports of associations between misidentification syndromes and autoimmune diseases such as multiple sclerosis have been published, but no papers address a correlation with limbic encephalitis or lymphoma.

Nós relatamos o caso de um paciente com início insidioso e lentamente progressivo de declínio cognitivo, sintomas comportamentais, crises convulsivas do lobo temporal e pensamentos delirantes típicos dos delírios monotemáticos de identificação. A apresentação clínica associada aos exames complementares levaram ao diagnóstico de encefalite límbica relacionada a linfoma difuso de grandes células B. O paciente foi submetido a imunoterapia com altas doses de corticoide sem melhora clínica. Não foi realizado tratamento específico para o linfoma em função do paciente ter evoluído para óbito por choque séptico secundário a infecção respiratória nosocomial. Os delírios monotemáticos de identificação representam uma forma única e incomum de comprometimento cognitivo nas quais o paciente consistentemente identifica de forma errônea pessoas, lugares, objetos ou eventos. A síndrome de Capgras é o subtipo mais comum dessas desordens, sendo definida como a crença recorrente e transitória que um impostor substituiu uma pessoa familiar. Essas entidades são geralmente relacionadas com doenças neurodegenerativas e distúrbios psiquiátricos. Raros relatos da associação entre os delírios monotemáticos de identificação e doenças autoimunes como esclerose múltipla foram publicados, porém não há artigos abordando a correlação com encefalite límbica ou linfoma.

Human Herpes Virus 6 Encephalitis Following Bone Marrow Transplantation with Uncommon Magnetic Resonance Imaging Findings

BACKGROUND: Human Herpes Virus 6 (HHV6) is commonly associated with encephalitis following bone marrow transplantation. However, hippocampal atrophy and global hypometabolism are rare findings in HHV6 encephalitis. CASE REPORT: A 41-year-old right-handed woman with acute lymphoblastic leukemia presented with fever and mental changes 2 weeks after receiving a sibling bone marrow transplant. The patient's cerebrospinal fluid (CSF) was positive for HHV-6 deoxyribonucleic acid (DNA), but was negative for other viral DNA. Brain magnetic resonance imaging revealed atrophic changes in bilateral medial temporal lobes. Following 4 weeks of ganciclovir therapy, a CSF exam was negative for HHV-6 DNA and the patient's neurological symptoms partially improved. However, she was disoriented and had severe retrograde and anterograde amnesia. 18F-fluorodeoxyglucose-positron emission tomography indicated global hypometabolism in the medial temporal lobes and the fronto-parietal cortices. CONCLUSIONS: This is a rare and unusual case of hippocampal atrophy in the acute stage of HHV6 encephalitis. Our imaging findings may reflect the chronic indolent course of HHV6 encephalitis.

Anti-LGI1 Antibody Limbic Encephalitis Presented with Amnestic Mild Cognitive Impairment

No abstract available.

Anti-LGI1 Antibody Limbic Encephalitis Presented with Amnestic Mild Cognitive Impairment

No abstract available.

Bilateral Anterior Opercular Syndrome With Partial Kluver-Bucy Syndrome in a Stroke Patient: A Case Report

Bilateral anterior opercular syndrome and partial Kluver-Bucy syndrome are associated with bilateral middle cerebral artery lesions. The combination of these two syndromes has only been reported in a child with limbic encephalitis. In this case, a 44-year-old woman with bilateral middle cerebral artery infarction, which occurred 2 years prior, could walk independently. However, she showed automatic-voluntary dissociation and anarthria with preserved writing skills. She also presented hypersexuality, hypermetamorphosis, and memory disturbances. Here, we report a case of an adult stroke patient who suffered from bilateral anterior opercular syndrome accompanied by partial Kluver-Bucy syndrome.

Bilateral Anterior Opercular Syndrome With Partial Kluver-Bucy Syndrome in a Stroke Patient: A Case Report

Bilateral anterior opercular syndrome and partial Kluver-Bucy syndrome are associated with bilateral middle cerebral artery lesions. The combination of these two syndromes has only been reported in a child with limbic encephalitis. In this case, a 44-year-old woman with bilateral middle cerebral artery infarction, which occurred 2 years prior, could walk independently. However, she showed automatic-voluntary dissociation and anarthria with preserved writing skills. She also presented hypersexuality, hypermetamorphosis, and memory disturbances. Here, we report a case of an adult stroke patient who suffered from bilateral anterior opercular syndrome accompanied by partial Kluver-Bucy syndrome.

Relapsing Polychondritis with Central Nervous System Involvement: Experience of Three Different Cases in a Single Center

Relapsing polychondritis (RP) is an autoimmune disorder characterized by inflammation in cartilaginous structures including the ears, noses, peripheral joints, and tracheobronchial tree. It rarely involves the central nervous system (CNS) but diagnosis of CNS complication of RP is challenging because it can present with varying clinical features. Herein we report 3 cases of relapsing polychondritis involving CNS with distinct manifestations and clinical courses. The first patient presented with rhombencephalitis resulting in brain edema and death. The second patient had acute cognitive dysfunction due to limbic encephalitis. He was treated with steroid pulse therapy and recovered without sequelae. The third patient suffered aseptic meningitis that presented as dementia, which was refractory to steroid and immune suppressive agents. We also reviewed literature on CNS complications of RP.