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1.
Parasitol Res ; 122(9): 2147-2154, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-37428312

RESUMO

Neurocysticercosis is a heterogeneous disease, and the patient's sex seems to play a role in this heterogeneity. Hosts' sexual dimorphism in cysticercosis has been largely explored in the murine model of intraperitoneal Taenia crassiceps cysticercosis. In this study, we investigated the sexual dimorphism of inflammatory responses in a rat model of extraparenchymal neurocysticercosis caused by T. crassiceps. T. crassiceps cysticerci were inoculated in the subarachnoid space of Wistar rats (25 females, 22 males). Ninety days later, the rats were euthanized for histologic, immunohistochemistry, and cytokines studies. Ten animals also underwent a 7-T magnetic resonance imaging (MRI). Female rats presented a higher concentration of immune cells in the arachnoid-brain interface, reactive astrogliosis in the periventricular region, in situ pro-inflammatory cytokine (interleukin [IL]-6) and anti-inflammatory cytokine (IL-10), and more intense hydrocephalus on MRI than males. Intracranial hypertension signals were not observed during the observational period. Overall, these results suggest sexual dimorphism in the intracranial inflammatory response that accompanied T. crassiceps extraparenchymal neurocysticercosis.


Assuntos
Cisticercose , Neurocisticercose , Taenia , Masculino , Camundongos , Feminino , Ratos , Animais , Neurocisticercose/diagnóstico por imagem , Neurocisticercose/patologia , Modelos Animais de Doenças , Caracteres Sexuais , Ratos Wistar , Citocinas , Interleucina-6 , Camundongos Endogâmicos BALB C
3.
JNMA J Nepal Med Assoc ; 61(258): 188-191, 2023 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-37203964

RESUMO

Multiple ring-enhancing lesions are commonly encountered abnormalities in neuroimaging. There are many differentials for such lesions as infections, neoplasms, vascular lesions, inflammatory and demyelinating conditions, and granulomatous diseases. In developing countries, tuberculoma and neurocysticercosis are the two important etiologies to be considered. This case report illustrates how multiple ring-enhancing lesions can lead to our management in one direction while the true diagnosis remains elusive. A 53-year-old male who presented with a headache was initially diagnosed and treated as neurocysticercosis, then neurosarcoidosis ultimately turned out to be a case of Central Nervous System Tuberculosis on further evaluation. Consideration of only clinical scenarios and neurological imaging can lead to diagnostic inaccuracy, mismanagement and poor outcome, therefore, other supporting lab investigations should be considered for making a correct diagnosis. Keywords: brain; case reports; neurocysticercosis; sarcoidosis; tuberculoma.


Assuntos
Doenças do Sistema Nervoso Central , Neurocisticercose , Sarcoidose , Tuberculoma , Tuberculose do Sistema Nervoso Central , Masculino , Humanos , Pessoa de Meia-Idade , Neurocisticercose/complicações , Neurocisticercose/diagnóstico , Neurocisticercose/patologia , Doenças do Sistema Nervoso Central/complicações , Doenças do Sistema Nervoso Central/diagnóstico , Sarcoidose/complicações , Sarcoidose/diagnóstico , Tuberculose do Sistema Nervoso Central/complicações , Tuberculose do Sistema Nervoso Central/diagnóstico , Imageamento por Ressonância Magnética
4.
J Forensic Leg Med ; 93: 102471, 2023 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-36584500

RESUMO

Neurocysticercosis is endemic in many parts of the underdeveloped and developing countries, with continuous presence in developed countries due to the influx of migrants from regions where the diseases are endemic. Neuroimaging, anatomic pathological techniques, immunodiagnostic tests, clinical examination and epidemiologic considerations will easily provide the diagnosis. However, physicians in developed countries are perhaps progressively missing the diagnosis, and need to re-acquaint themselves with the condition and acquire a high suspicion index. The authors present a medicolegal case where the forensic team made a conclusion of neurocysticercosis (among other diagnoses), following post mortem examination of a largely skeletonized and mummified human remains. Characteristic changes were observed in the calvarium of the decedent at autopsy. Review of the antemortem medical records revealed that Computed Tomography (CT) scan had 12 years earlier, suggested diagnostic features in a Hispanic migrant, but the attending surgeons failed to consider the possibility of the condition. Physicians should pay attention to suggestive clinical findings especially when attending to individuals coming from endemic parts of the world. Cysticercosis remains endemic and a misdiagnosis can potentially attract medical malpractice suits. Forensic pathologists should also consider the possibility of uncommon clinical disorders, even in skeletonized remains. Perhaps an earlier diagnosis might have altered the outcome in the decedent.


Assuntos
Neurocisticercose , Humanos , Neurocisticercose/diagnóstico , Neurocisticercose/epidemiologia , Neurocisticercose/patologia , Restos Mortais , Autopsia , Neuroimagem/métodos , Tomografia Computadorizada por Raios X
5.
Curr Neurol Neurosci Rep ; 22(4): 285-291, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-35332514

RESUMO

PURPOSE OF THE REVIEW: Neurocysticercosis (NCC) has been well recognized as a leading cause of epilepsy. More recently, studies of other parasitic diseases such as cerebral malaria (CM) and onchocerciasis are yielding novel insights into the pathogenesis of parasite-associated epilepsy. We compare the clinical and electrophysiological findings in epilepsy associated with these highly prevalent parasites and discuss the mechanisms involved in epileptogenesis. RECENT FINDINGS: Electrophysiological and imaging biomarkers continue to emerge, and individuals who are at-risk of developing parasite-associated epilepsies are being identified with greater reliability. While both Taenia solium and Plasmodium falciparum directly affect the brain parenchyma, Onchocerca volvulus is not known to invade the central nervous system. Thus, the causal association between O. volvulus and epilepsy remains controversial. Both NCC and CM have a well-defined acute phase when the parasites directly or indirectly invade the brain parenchyma and lead to local inflammatory changes. This is followed by a chronic phase marked by recurrent seizures. However, these stages of epileptogenic process have not been identified in the case of O. volvulus.


Assuntos
Epilepsia , Volvo Intestinal , Neurocisticercose , Doenças Parasitárias , Epilepsia/etiologia , Epilepsia/patologia , Humanos , Volvo Intestinal/complicações , Neurocisticercose/complicações , Neurocisticercose/patologia , Doenças Parasitárias/complicações , Reprodutibilidade dos Testes
6.
Acta Parasitol ; 67(1): 569-572, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-34851512

RESUMO

BACKGROUND: Cysticercosis is the commonest parasitic disease to affect the central nervous system (CNS). However, cysticercosis affecting the spine is extremely rare. We reported a rare case of cysticercosis involving the whole spinal canal in China. CASE PRESENTATION: A rare case of cysticercosis involving the entire spinal cord, in a 52-year-old Chinese man, was detected in 2021. Epidemiological investigation, clinical and etiological examination was performed. CONCLUSION: Since spinal cysticercosis is a rare but potentially life-threatening disease, clinicians should always consider the differential diagnosis of space-occupying lesions.


Assuntos
Cisticercose , Neurocisticercose , Doenças da Medula Espinal , Cisticercose/diagnóstico , Diagnóstico Diferencial , Humanos , Masculino , Pessoa de Meia-Idade , Neurocisticercose/diagnóstico , Neurocisticercose/patologia , Canal Medular/diagnóstico por imagem , Canal Medular/patologia , Doenças da Medula Espinal/diagnóstico por imagem , Doenças da Medula Espinal/parasitologia
8.
Am J Trop Med Hyg ; 106(1): 215-218, 2021 10 25.
Artigo em Inglês | MEDLINE | ID: mdl-34695784

RESUMO

Magnetic resonance images from 197 patients with calcified neurocysticercosis (NCC), 38 with viable NCC and 197 NCC-free healthy rural villagers were evaluated to compare the frequency of hippocampal atrophy/sclerosis (HAS) across these populations. Scheltens' medial temporal atrophy scale was used for hippocampal rating. The median age of the 432 study participants was 46 years (interquartile range, 29-62 years), and 58% were women. Hippocampal atrophy/sclerosis was disclosed in 26.9% patients with calcified NCC, compared with 7.9% in patients with viable NCC and 8.1% in healthy rural villagers. After adjusting for age, gender, and history of epilepsy, hippocampal atrophy/sclerosis was more frequent in patients with calcified NCC than in those with viable cysts (RR, 3.60; 95% CI, 1.18- 0.99; P = 0.025) and healthy rural villagers (RR, 3.43; 95% CI, 1.94-6.06; P < 0.001), suggesting that hippocampal damage develops late in the course of this parasitic disease.


Assuntos
Calcinose/complicações , Hipocampo/patologia , Neurocisticercose/complicações , Adulto , Atrofia , Calcinose/diagnóstico por imagem , Calcinose/patologia , Feminino , Hipocampo/diagnóstico por imagem , Hipocampo/parasitologia , Humanos , Imageamento por Ressonância Magnética , Masculino , Doenças Negligenciadas/complicações , Doenças Negligenciadas/diagnóstico por imagem , Doenças Negligenciadas/patologia , Neurocisticercose/diagnóstico por imagem , Neurocisticercose/patologia , Esclerose
9.
Am J Trop Med Hyg ; 105(6): 1468-1471, 2021 10 18.
Artigo em Inglês | MEDLINE | ID: mdl-34662862

RESUMO

This article analyzes data from scientific publications (mainly reviews) concerning the link between human neurocysticercosis and epilepsy. Along with data from our own studies on experimental hippocampal sclerosis induced by a Taenia crassiceps metacestode factor in mice, it explores the connection between mechanisms that likely favor the development of epilepsy in cases of human neurocysticercosis. The data from both sources suggest the idea that the T. solium metacestode factor causes hippocampal sclerosis and later epilepsy in humans with neurocysticercosis.


Assuntos
Epilepsia do Lobo Temporal/fisiopatologia , Neurocisticercose/fisiopatologia , Taenia solium/patogenicidade , Animais , Anti-Helmínticos/uso terapêutico , Modelos Animais de Doenças , Epilepsia do Lobo Temporal/tratamento farmacológico , Epilepsia do Lobo Temporal/etiologia , Epilepsia do Lobo Temporal/patologia , Hipocampo/patologia , Humanos , Camundongos , Neurocisticercose/complicações , Neurocisticercose/tratamento farmacológico , Neurocisticercose/patologia , Esclerose , Taenia
10.
Am J Trop Med Hyg ; 105(1): 176-180, 2021 07 07.
Artigo em Inglês | MEDLINE | ID: mdl-34232912

RESUMO

Neurocysticercosis (NCC) is endemic in many parts of the world, carrying significant neurological morbidity that varies according to whether lesions are located inside the cerebral parenchyma or in extraparenchymal spaces. The latter, in particular subarachnoid NCC, is assumed to be more severe, but no controlled studies comparing mortality between types of NCC exist. The aim of this study was to compare all-cause mortality between patients with intraparenchymal NCC and those with subarachnoid NCC. Vital status and sociodemographic characteristics were evaluated in patients with intraparenchymal viable, intraparenchymal calcified, and subarachnoid NCC attending a neurological referral hospital in Lima, Perú. Survival analyses using Kaplan-Meier curves and Cox proportional regression models were carried out to compare mortality rates between groups. From 840 NCC patients followed by a median time of 82.3 months, 42 (5.0%) died, six (1.8%) in the intraparenchymal viable group, four (1.3%) in the calcified group, and 32 (16.6%) in the subarachnoid group (P < 0.001). Older age and lower education were significantly associated with mortality. The age-adjusted hazard ratio for death in the subarachnoid group was 13.6 (95% CI: 5.6-33.0, P < 0.001) compared with the intraparenchymal viable group and 10.7 (95% CI: 3.7-30.8, P < 0.001) when compared with the calcified group. We concluded that subarachnoid disease is associated with a much higher mortality in NCC.


Assuntos
Neurocisticercose/mortalidade , Neurocisticercose/patologia , Adulto , Animais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Espaço Subaracnóideo , Taenia solium
11.
Cochrane Database Syst Rev ; 6: CD000215, 2021 06 01.
Artigo em Inglês | MEDLINE | ID: mdl-34060667

RESUMO

BACKGROUND: Neurocysticercosis is a parasitic infection of the central nervous system by the larval stage of the pork tapeworm and is a common cause of seizures and epilepsy in endemic areas. Anthelmintics (albendazole or praziquantel) may be given alongside supportive treatment (antiepileptics/analgesia) with the aim of killing these larvae (cysticerci), with or without corticosteroid treatment. However, there are potential adverse effects of these drugs, and the cysticerci may eventually die without directed anthelminthic treatment. OBJECTIVES: To assess the effects of anthelmintics on people with neurocysticercosis. SEARCH METHODS: We searched the Cochrane Infectious Diseases Group Specialized Register, the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, Embase, LILACS, the WHO ICTRP, and ClinicalTrials.gov, up to 21 October 2020. SELECTION CRITERIA: Randomized controlled trials comparing anthelmintics and supportive treatment (+/- corticosteroids) with supportive treatment alone (+/- corticosteroids) for people with neurocysticercosis. DATA COLLECTION AND ANALYSIS: Two review authors independently screened the title and abstract of all articles identified by the search. We obtained full-text articles to confirm the eligibility of all studies that passed screening. One review author extracted data, which a second review author checked. Two review authors assessed the risk of bias of each trial and performed GRADE assessments. In cases of disagreement at consensus discussion stage between review authors, we consulted a third review author. We calculated risk ratios (RR) for dichotomous variables, with 95% confidence intervals (CIs) for pooled data from studies with similar interventions and outcomes. MAIN RESULTS: We included 16 studies in the review. Only two studies investigated praziquantel and did not report data in a format that could contribute to meta-analysis. Most results in this review are therefore applicable to albendazole versus placebo or no anthelmintic. The aggregate analysis across all participants with neurocysticercosis did not demonstrate a difference between groups in seizure recurrence, but heterogeneity was marked (RR 0.94, 95% CI 0.78 to 1.14; 10 trials, 1054 participants; I2 = 67%; low-certainty evidence). When stratified by participants with a single cyst or multiple cysts, pooled analysis suggests that albendazole probably improves seizure recurrence for participants with a single cyst (RR 0.61, 95% CI 0.4 to 0.91; 5 trials, 396 participants; moderate-certainty evidence). All studies contributing to this analysis recruited participants with non-viable, intraparenchymal cysts only, and most participants were children. We are uncertain whether or not albendazole reduces seizure recurrence in participants with multiple cysts, as the certainty of the evidence is very low, although the direction of effect is towards albendazole causing harm (RR 2.05, 95% CI 1.28 to 3.31; 2 trials, 321 participants; very low-certainty evidence). This analysis included a large study containing a highly heterogeneous population that received an assessment of unclear risk for multiple 'Risk of bias' domains. Regarding radiological outcomes, albendazole probably slightly improves the complete radiological clearance of lesions (RR 1.22, 95% CI 1.07 to 1.39; 13 trials, 1324 participants; moderate-certainty evidence) and the evolution of cysts (RR 1.27, 95% CI 1.10 to 1.47; 6 trials, 434 participants; moderate-certainty evidence). More adverse events appeared to be observed in participants treated with either albendazole or praziquantel compared to those receiving placebo or no anthelmintic. The most commonly reported side effects were headache, abdominal pain, and nausea/vomiting. AUTHORS' CONCLUSIONS: For participants with a single cyst, there was less seizure recurrence in the albendazole group compared to the placebo/no anthelmintic group. The studies contributing to this evidence only recruited participants with a non-viable intraparenchymal cyst. We are uncertain whether albendazole reduces seizure recurrence for participants with multiple cysts. We also found that albendazole probably increases radiological clearance and evolution of lesions. There were very few studies reporting praziquantel outcomes, and these findings apply to albendazole only.


Assuntos
Albendazol/uso terapêutico , Anticestoides/uso terapêutico , Encefalopatias/tratamento farmacológico , Neurocisticercose/tratamento farmacológico , Adulto , Anticestoides/efeitos adversos , Viés , Encefalopatias/parasitologia , Encefalopatias/patologia , Criança , Humanos , Neurocisticercose/complicações , Neurocisticercose/patologia , Placebos/uso terapêutico , Praziquantel/efeitos adversos , Praziquantel/uso terapêutico , Ensaios Clínicos Controlados Aleatórios como Assunto , Convulsões/tratamento farmacológico , Convulsões/etiologia
12.
Arq. bras. neurocir ; 40(2): 146-151, 15/06/2021.
Artigo em Inglês | LILACS | ID: biblio-1362220

RESUMO

Purpose Experimental models might help understand the pathophysiology of neurocysticercosis-associated hydrocephalus. The present study aimed to compare the extent of hydrocephalus and tissue damage in rats with subarachnoid inoculation of different concentrations of Taenia crassiceps cyst proteins. Methods Sixty young rats were divided into two groups: low- and high-concentration groups. The animals in the low concentration group received 0.02ml of 2.4mg/ml T. crassiceps cyst proteins while those in the high concentration group received 0.02 ml of 11.6mg/ml T. crassiceps cyst proteins. The animals underwent magnetic resonance imaging at 1, 3, and 6 months postinoculation to assess the ventricle volume. Morphological assessment was performed at the end of the observation period. Results Repeated measures of ventricle volumes at 1, 3, and 6 months showed progressive enlargement of the ventricles. At 1 and 3 months, we observed no differences in ventricle volumes between the 2 groups. However, at 6 months, the ventricles were larger in the high concentration group (median » 3.86mm3, range: 2.37­12.68) compared with the low concentration group (median » 2.00mm3, range: 0.37­11.57), p » 0.003. The morphological assessment revealed a few inflammatory features in both groups. However, the density of oligodendrocytes and neurons within the periventricular region was lower in the high concentration group (5.18 versus 9.72 for oligodendrocytes and 15.69 versus 21.00 for neurons; p < 0.001 for both). Conclusion Our results suggest that, in rats, a higher concentration of T. crassiceps cyst proteins in the subarachnoid space could induce ventricle enlargement and reduce the number of neurons within the periventricular area.


Assuntos
Animais , Ratos , Ventrículos Cerebrais/fisiopatologia , Neurocisticercose/patologia , Hidrocefalia/parasitologia , Antígenos de Helmintos , Espaço Subaracnóideo/fisiopatologia , Taenia , Imageamento por Ressonância Magnética/métodos , Ratos Wistar , Estatísticas não Paramétricas , Infecções Parasitárias do Sistema Nervoso Central , Interações Hospedeiro-Parasita , Hidrocefalia/fisiopatologia
13.
PLoS Negl Trop Dis ; 15(4): e0009295, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-33905419

RESUMO

BACKGROUND: The parasite Taenia solium causes neurocysticercosis (NCC) in humans and is a common cause of adult-onset epilepsy in the developing world. Hippocampal atrophy, which occurs far from the cyst, is an emerging new complication of NCC. Evaluation of molecular pathways in brain regions close to and distant from the cyst could offer insight into this pathology. METHODS: Rats were inoculated intracranially with T. solium oncospheres. After 4 months, RNA was extracted from brain tissue samples in rats with NCC and uninfected controls, and cDNA was generated. Expression of 38 genes related to different molecular pathways involved in the inflammatory response and healing was assessed by RT-PCR array. RESULTS: Inflammatory cytokines IFN-γ, TNF-α, and IL-1, together with TGF-ß and ARG-1, were overexpressed in tissue close to the parasite compared to non-infected tissue. Genes for IL-1A, CSF-1, FN-1, COL-3A1, and MMP-2 were overexpressed in contralateral tissue compared to non-infected tissue. CONCLUSIONS: The viable cysticerci in the rat model for NCC is characterized by increased expression of genes associated with a proinflammatory response and fibrosis-related proteins, which may mediate the chronic state of infection. These pathways appear to influence regions far from the cyst, which may explain the emerging association between NCC and hippocampal atrophy.


Assuntos
Citocinas/metabolismo , Expressão Gênica , Hipocampo/patologia , Neurocisticercose/veterinária , Animais , Atrofia , Citocinas/genética , Hipocampo/parasitologia , Inflamação/metabolismo , Neurocisticercose/genética , Neurocisticercose/metabolismo , Neurocisticercose/patologia , Ratos , Taenia solium/imunologia
14.
Curr Opin Infect Dis ; 34(3): 228-237, 2021 06 01.
Artigo em Inglês | MEDLINE | ID: mdl-33741796

RESUMO

PURPOSE OF REVIEW: Early diagnosis of central nervous system (CNS) infections is crucial given high morbidity and mortality. Neuroimaging in CNS infections is widely used to aid in the diagnosis, treatment and to assess the response to antibiotic and neurosurgical interventions. RECENT FINDINGS: The Infectious Diseases Society of America (IDSA) guidelines have clear recommendations for obtaining a computerized tomography of the head (CTH) prior to lumbar puncture (LP) in suspected meningitis. In the absence of indications for imaging or in aseptic meningitis, cranial imaging is of low utility. In contrast, cranial imaging is of utmost importance in the setting of encephalitis, bacterial meningitis, ventriculitis, bacterial brain abscess, subdural empyema, epidural abscess, neurobrucellosis, neurocysticercosis, and CNS tuberculosis that can aid clinicians with the differential diagnosis, source of infection (e.g., otitis, sinusitis), assessing complications of meningitis (e.g., hydrocephalus, venous sinus thrombosis, strokes), need for neurosurgical interventions and to monitor for the response of therapy. Novel imaging techniques such as fast imaging employing steady-state acquisition (FIESTA), susceptibility-weighted imaging (SWI), and chemical exchange saturation transfer (CEST) contrast are briefly discussed. SUMMARY: Though the radiological findings in CNS infections are vast, certain patterns along with clinical clues from history and examination often pave the way to early diagnosis. This review reiterates the importance of obtaining cranial imaging when necessary, and the various radiological presentations of commonly encountered CNS infections.


Assuntos
Infecções do Sistema Nervoso Central/diagnóstico por imagem , Infecções Bacterianas do Sistema Nervoso Central/diagnóstico por imagem , Infecções Bacterianas do Sistema Nervoso Central/microbiologia , Infecções Bacterianas do Sistema Nervoso Central/patologia , Infecções Fúngicas do Sistema Nervoso Central/diagnóstico por imagem , Infecções Fúngicas do Sistema Nervoso Central/microbiologia , Infecções Fúngicas do Sistema Nervoso Central/patologia , Infecções do Sistema Nervoso Central/microbiologia , Infecções do Sistema Nervoso Central/parasitologia , Infecções do Sistema Nervoso Central/patologia , Humanos , Neurocisticercose/diagnóstico por imagem , Neurocisticercose/parasitologia , Neurocisticercose/patologia
15.
Rev Neurol ; 72(4): 141-144, 2021 02 16.
Artigo em Espanhol | MEDLINE | ID: mdl-33570161

RESUMO

INTRODUCTION: Neurocysticercosis is a parasitic infection of the central nervous system caused by contact with the eggs of the parasite Taenia solium, which subsequently lodge in brain and eye tissue. It manifests itself in the form of cystic lesions scattered throughout the brain parenchyma that are usually small in size and, depending on their stage of development, may appear with associated oedema or with calcifications inside them. CASE REPORT: We report the case of a 63-year-old male visiting due to constitutional symptoms, generalised pain and confusion. A cranial computed axial tomography (CAT) scan showed a right frontoparietal lesion with a cyst-like appearance and surrounding oedema, as well as several smaller lesions with calcifications inside them. Given the pseudotumoural appearance, an extension study was performed and a prostatic adenocarcinoma with universal bone metastases was detected. Treatment with antiparasitic medication and dexamethasone was started, with a good initial response, which later worsened with the onset of left hemiparesis. In the follow-up CAT scan, an increase in the right frontoparietal lesion with increased oedema was observed, related to the inflammatory response to the treatment. After a new course of antiparasitic drugs, the patient maintained a sustained and stable clinical response. CONCLUSIONS: The unusual feature of this case was a rare presentation of neurocysticercosis in the form of a pseudotumoural lesion. Few cases have been reported in the literature, and it is important to maintain a high level of clinical and radiological suspicion, as this type of lesion may be more resistant to the penetration of antiparasitic drugs and require longer treatment and even surgery.


TITLE: Forma tumoral de neurocisticercosis en un paciente con carcinoma de próstata.Introducción. La neurocisticercosis es una infección parasitaria del sistema nervioso central que se produce por contacto con los huevos del parásito Taenia solium, que posteriormente se acantona en el tejido cerebral y ocular. Se manifiesta en forma de lesiones quísticas dispersas por el parénquima cerebral que suelen ser de pequeño tamaño y, dependiendo del estadio evolutivo en el que se presenten, pueden aparecer con edema asociado o con calcificaciones en su interior. Caso clínico. Varón de 63 años que consulta por cuadro constitucional, dolores generalizados y confusión. En la tomografía axial computarizada (TAC) craneal se visualiza una lesión frontoparietal derecha de 4 cm de diámetro, de aspecto quístico y edema circundante, así como varias lesiones de menor tamaño con calcificaciones en su interior. Dado el aspecto pseudotumoral, se realiza un estudio de extensión y se detecta un adenocarcinoma prostático con metástasis óseas universales. Se comienza un tratamiento con antiparasitarios y dexametasona con buena respuesta inicial, y empeora posteriormente con la aparición de una hemiparesia izquierda. En la TAC de control se observa un aumento de la lesión frontoparietal derecha con mayor edema, en relación con la respuesta inflamatoria con el tratamiento. Tras un nuevo ciclo de antiparasitarios, mantiene una respuesta clínica sostenida y estable. Conclusiones. Este caso tiene la peculiaridad de una forma de presentación poco frecuente de neurocisticercosis en forma de lesión pseudotumoral. Existen pocos casos descritos en la bibliografía, y es importante mantener un alto nivel de sospecha clínica y radiológica, ya que este tipo de lesiones puede ser más resistente a la penetración de antiparasitarios y precisar un tratamiento más prolongado e incluso quirúrgico.


Assuntos
Adenocarcinoma/complicações , Neurocisticercose/complicações , Neoplasias da Próstata/complicações , Humanos , Masculino , Pessoa de Meia-Idade , Neurocisticercose/patologia
16.
Forensic Sci Med Pathol ; 17(1): 167-171, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-32930946

RESUMO

In this case from 1937, the deceased was a 52-year-old female who was suffering from systemic cysticercosis, with prominent neurological and psychiatric symptoms. Given the protracted clinical course and autopsy findings it appears likely that the disease led the woman to commit suicide by ingesting lye, a corrosive substance, and the most common way to commit suicide in Belgrade at the time. The autopsy revealed many rounded transparent cysts, attached to the dura and pia-arachnoid, as well as encapsulated in the intercostal muscles, diaphragm and muscles of the arms, legs and the trunk. Solitary cysticercosis of muscles without involvement of the central nervous system is rare: most soft tissue and muscular cysticercal infections are associated with the central nervous system. Parasites usually lodge in the cerebral cortex or the subcortical white matter, due to the high vascular supply of these areas. Psychiatric symptoms in neurocysticercosis have been frequently reported, along with cognitive decline and intellectual deterioration, depressive disorders, behavioral disturbance and psychosis. Although sporadically, the disease is present even today, and neurocysticercosis is the leading cause of epilepsy in the developing world. To maintain its lifecycle, Taenia solium requires non-industrialized pig rearing conditions, consumption of undercooked pork, and low sanitation standards. Socioeconomic and sanitary improvement and educating people about food processing, the disease and antihelminthic therapy, are important factors contributing to a significant reduction in the prevalence of this potentially eradicable disease worldwide.


Assuntos
Neurocisticercose/patologia , Suicídio Consumado , Encéfalo/parasitologia , Encéfalo/patologia , Cáusticos/envenenamento , Cisticercose/patologia , Feminino , História do Século XX , Humanos , Lixívia/envenenamento , Pessoa de Meia-Idade , Músculo Esquelético/parasitologia , Músculo Esquelético/patologia , Museus , Neurocisticercose/psicologia , Sérvia
17.
World Neurosurg ; 146: 205-209, 2021 02.
Artigo em Inglês | MEDLINE | ID: mdl-33342760

RESUMO

BACKGROUND: Neurocysticercosis, a common parasitic infection in developing areas, usually exists in supratentorial parenchyma. Literature review shows few case reports published for cerebellopontine angle cysticercosis, but its coexistence with a schwannoma in the same cistern has never been seen before. This leads to confusion in preoperative diagnosis and management. CASE DESCRIPTION: Such a unique case in which dual pathology (i.e., coexisting trigeminal schwannoma along with neurocysticercosis) was present in same location with relevant radiology and histopathology and management is discussed in this case report. CONCLUSIONS: Cysticercosis should be kept as a differential diagnosis in cystic lesions of the CP angle, especially in endemic areas and even in cases showing obvious cystic schwannoma on imaging. Care should be taken to prevent spillage of cyst contents while puncturing the cyst wall for a better outcome.


Assuntos
Doenças Cerebelares/complicações , Ângulo Cerebelopontino/patologia , Neurocisticercose/complicações , Neuroma Acústico/complicações , Adulto , Doenças Cerebelares/patologia , Humanos , Masculino , Neurocisticercose/patologia , Neuroma Acústico/patologia
18.
World Neurosurg ; 146: 95-102, 2021 02.
Artigo em Inglês | MEDLINE | ID: mdl-33127574

RESUMO

BACKGROUND: Neurocysticercosis (NCC) is the commonest parasitic infection of the central nervous system. There is significant difference in incidence of NCC depending on geographic location, and incidence as high as 4% is reported in the endemic areas. It results from human affliction by the larval stage of Taenia solium. Spinal NCC is quite rare as compared with cranial NCC and accounts for 1.5%-3% of all cases. Both spine and cranium can be rarely involved in NCC, and cranial involvement usually precedes the spinal involvement. CASE DESCRIPTION: We report a case of a 51-year-old woman who had spinal involvement first in the form of spinal intradural extramedullary disease and then developed cranial involvement more than 1 year later. She developed spinal arachnoiditis. She developed communicating hydrocephalous requiring ventriculoperitoneal shunt. Later she developed isolated fourth ventricle and required excision of the fourth ventricular NCC. The unique aspects of our patient were a very aggressive course and involvement of cranium after spinal involvement. We describe her clinical course over 3 years and the management done. CONCLUSIONS: NCC can sometimes follow a very aggressive course and can involve both cranial and spinal compartments. Management of such patients is not standardized given the rarity of such cases.


Assuntos
Encefalopatias/patologia , Neurocisticercose/patologia , Doenças da Medula Espinal/patologia , Feminino , Humanos , Pessoa de Meia-Idade
19.
Epilepsy Res ; 168: 106472, 2020 12.
Artigo em Inglês | MEDLINE | ID: mdl-33137632

RESUMO

INTRODUCTION: Neurocysticercosis (NCC) as cause of drug resistant epilepsy (DRE) is commonly reported from India. We reviewed the neuropathological findings in patients undergoing resective surgery for DRE due to NCC, to determine the pathomechanism of epileptogenesis. METHODS: Clinical, demographic and neuropathological findings of histologically confirmed cases of NCC causing DRE between 2005-2019 were reviewed. NeuN, GFAP, phosphorylated neurofilament, vimentin, CD34 for glial/ neuronal alterations, and Masson trichrome, Luxol Fast blue for evidence of fibrosis/ demyelination was used to determine cause of epileptogenesis. RESULTS: There were 12 cases of NCC associated with dual/ double pathology, which constituted 3.02 % (12/398) of all the operated DRE. [Age range: 17-37y, Male:Female = 1.4:1]. Seizure duration ranged from 3-32y, with seizure onset between 4-27y. On MRI, lesions were of variable signal intensity on T1 and isointense on T2 with blooming on GRE/ SWI, and CT revealed calcification. Majority (11/12) had associated hippocampal sclerosis (HS) type 1 (dual pathology), localised to the same side as cysticercal cyst, suggesting it may be involved in the pathogenesis of HS. Ten had single cysticercal lesion involving ipsilateral hippocampus in 6, parahippocampal gyrus in 2, amygdala and temporal lobe in 1 case each. One had multiple NCC located in bilateral frontal, parietal and ipsilateral hippocampus. Adjacent cortex around the NCC evaluated in 6 cases, revealed inflammation, gliosis, axonal disruption/ beading, and variable synaptic/ neuronal dystrophic changes. There was a single case of NCC with Focal cortical dysplasia (FCD) type IIb (double pathology). In 11/12 cases Engel's post-surgery outcome was available with all having class I outcome. CONCLUSION: HS was most common pathology associated with cysticercosis (Dual pathology), localised ipsilateral to the cysticercal cyst, suggesting that HS is a secondary/ epiphenomenon. Perilesional changes such as inflammation, gliosis, dystrophic synaptic and axonal pathology play a role in inducing or perpetuating the epileptiform activity. The association of FCD IIb with NCC in one case is likely to be a chance occurrence.


Assuntos
Epilepsia Resistente a Medicamentos/patologia , Epilepsia do Lobo Temporal/patologia , Hipocampo/patologia , Neurocisticercose/patologia , Adolescente , Adulto , Epilepsia Resistente a Medicamentos/cirurgia , Epilepsia do Lobo Temporal/cirurgia , Feminino , Humanos , Masculino , Neurocisticercose/complicações , Neurônios/patologia , Giro Para-Hipocampal/patologia , Convulsões/patologia , Adulto Jovem
20.
Pan Afr Med J ; 36: 379, 2020.
Artigo em Francês | MEDLINE | ID: mdl-33235656

RESUMO

Cysticercosis is a neglected tropical disease set as health priority by WHO. Most of the reported cases included isolated types of cysticercosis affecting the skin, the eyes or the brain . Disseminated types, however, are rare. We here report a case of disseminated cysticercosis affecting the brain, the eyes and the skin in a Senegalese female patient aged 66 years admitted with headaches and chronic seizures. Clinical examination showed cerebellar syndrome associated with generalized and painless nodular subcutaneous lesions. Diagnosis was confirmed based on histopathological examination of skin biopsy which showed cysticerci. Patient's outcome was good under albendazole therapy.


Assuntos
Encéfalo/parasitologia , Cisticercose/diagnóstico , Olho/parasitologia , Pele/parasitologia , Idoso , Albendazol/administração & dosagem , Encéfalo/patologia , Cisticercose/tratamento farmacológico , Cisticercose/patologia , Diagnóstico Diferencial , Olho/patologia , Infecções Oculares Parasitárias/diagnóstico , Infecções Oculares Parasitárias/tratamento farmacológico , Infecções Oculares Parasitárias/patologia , Feminino , Cefaleia/diagnóstico , Cefaleia/tratamento farmacológico , Cefaleia/parasitologia , Humanos , Neurocisticercose/diagnóstico , Neurocisticercose/tratamento farmacológico , Neurocisticercose/patologia , Fenobarbital/administração & dosagem , Prednisolona/administração & dosagem , Convulsões/diagnóstico , Convulsões/tratamento farmacológico , Convulsões/parasitologia , Senegal , Pele/patologia , Dermatopatias Parasitárias/diagnóstico , Dermatopatias Parasitárias/tratamento farmacológico
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