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1.
Braz. arch. biol. technol ; 63: e20190024, 2020. tab, graf
Article in English | LILACS | ID: biblio-1132186

ABSTRACT

Abstract Pigments produced by submerged fermentation of three filamentous fungi isolated from Brazilian caves, namely Aspergillus keveii, Penicillium flavigenum, and Epicoccum nigrum, were submitted to spray drying in presence of the adjuvants maltodextrin, modified starch or gum arabic. Yellow fine powders with low moisture content and water activity, and high color retention (> 70%) were successfully generated with a high product recovery ratio (> 50%), independently of the adjuvant used. The dried products have enhanced stability and potential to might be used as a natural colorant in food and pharmaceutical applications.


Subject(s)
Animals , Pigments, Biological/biosynthesis , Starch/biosynthesis , Fungi/metabolism , Gum Arabic , Maltose/biosynthesis , Aspergillus , Brazil , Caves/microbiology , Fungi/classification , Maltose/analogs & derivatives , Models, Theoretical
2.
Rev. bras. ciênc. mov ; 26(3): 123-133, jul.-set.2018. ilus
Article in Portuguese | LILACS | ID: biblio-966901

ABSTRACT

O objetivo deste estudo foi identificar o significado atribuído ao lazer por dois grupos de espeleologia nas relações socioambientais durante a prática do caving. Esta é uma pesquisa de abordagem qualitativa desenvolvida com 30 indivíduos pertencentes ao Espeleogrupo Peter Lund e à Associação de Agentes Ambientais do Vale do Peruaçu. Os dados foram coletados através de entrevistas semiestruturadas, processados no IRAMUTEQ e a análise de similitude feita. Os resultados obtidos indicaram uma associação entre lazer-caverna e lazer-atividade. O lazer pode ser entendido como uma atividade prática em ambiente de caverna realizada no tempo livre. Ele promove o prazer individual e coletivo, um contato com a natureza que proporciona sensações e bem-estar, aventura e descoberta, por meio do caving, na contemplação do ambiente cavernícola. O lazer pode ser entendido como uma atividade prática em ambiente de caverna realizada no tempo livre pelos seus praticantes. Ele promove o prazer individual e coletivo, um contato com a natureza que proporciona sensações e bem-estar, aventura e descoberta, por meio do caving, na contemplação do ambiente cavernícola....(AU)


The objective of this study was to identify the meaning attributed to leisure by two groups of caving in the socioenvironmental relations during the practice of caving. This is a qualitative approach research developed with 30 individuals belonging to the Peter Lund Speleogrupo and to the Association of Environmental Agents of the Vale do Peruaçu. The data were collected through semi-structured interviews, processed in IRAMUTEQ and the similitude analysis made. The results indicated an association between leisure-cave and leisure-activity. Leisure can be understood as a practical activity in cave environment held in free time. It promotes individual and collective pleasure, a contact with nature that provides sensations and well-being, adventure and discovery, through caving, in contemplation of the cave environment. Leisure can be understood as a practical activity in a cave environment held in free time by its practitioners. It promotes individual and collective pleasure, a contact with nature that provides sensations and well-being, adventure and discovery, through caving, in contemplation of the cave environment....(AU)


Subject(s)
Humans , Male , Female , Adolescent , Physical Education and Training , Caves , Leisure Activities
3.
An. acad. bras. ciênc ; 89(3): 1615-1628, July-Sept. 2017. tab, graf
Article in English | LILACS | ID: biblio-886750

ABSTRACT

ABSTRACT The food base in the subterranean environment consists mainly of allochthonous materials. In this environment the resources are distributed generally in a heterogeneous dispersed way and the distribution of resources and their availability determine where the terrestrial invertebrates will reside, which is important for understanding ecological relationships and to establish conservation strategies. Thus, we tested how the complexity of substrates influences the richness and composition of the subterranean terrestrial invertebrates in the Presidente Olegário karst area, southeastern Brazil. We carried out collections in six caves during both dry and wet seasons, using combined collection methods. We observed different distributions in relation to the substrate, because the environmental heterogeneity increases the amount of available niches for the fauna. Some taxa showed a preference for specific substrates, probably related to the availability of food resources and humidity and to body size restriction, emphasizing the niche differentiation between species. Anthropogenic impacts can cause irreversible alterations in the subterranean fauna because the subterranean environment is dependent on the surface for input of trophic resources. On-going impacts in the Presidente Olegario karst area, like agriculture, pastures, gas extraction, and hydroelectric projects, are therefore a serious threat to subterranean biodiversity and this region should be prioritized for conservation.


Subject(s)
Animals , Biodiversity , Caves , Invertebrates/classification , Seasons , Brazil , Population Density , Animal Distribution
4.
Rev. bras. parasitol. vet ; 25(1): 61-68, Jan.-Mar. 2016. tab, graf
Article in English | LILACS | ID: lil-777529

ABSTRACT

Abstract This study had the aim of ascertaining the sandfly fauna and possible presence ofLeishmania in these insects, collected in caves in the state of Rondônia, Brazil. Collections were conducted in eight caves located in two different areas of this state. Leishmania in the sandflies collected was detected using the polymerase chain reaction (PCR). This was the first study on sandflies from caves in Rondônia and, among the total of 1,236 individuals collected, 24 species and 10 genera were identified. The speciesEvandromyia georgii was collected for the first time in Rondônia and the most abundant species were Trichophoromyia ubiquitalis with 448 individuals (36.2%), followed by T. octavioi with 283 (22.9%) and E. georgii with 179 (14.5%). For the PCR, 17 pools were analyzed and five pools were positive (forT. auraensis in three pools and for Nyssomyia shawi and N. antunesi in one pool each). The kDNA region was amplified and the presence of Leishmania DNA was confirmed. The sandfly fauna in these caves can be considered diverse in comparison with similar studies in other regions. It may be that some species use caves as a temporary shelter and breeding site, while other species live exclusively in this environment. The detection of LeishmaniaDNA indicates that this pathogen is circulating in cave environments and that further studies are needed in order to ascertain the risks of infection by leishmaniasis in these locations with high touristic potential.


Resumo O objetivo deste estudo foi conhecer a fauna de flebotomíneos, e possível presença de Leishmania nestes insetos, coletados em cavernas do Estado de Rondônia. As coletas foram realizadas em oito cavernas localizadas em duas áreas diferentes do Estado. A detecção de Leishmania nos flebotomíneos foi realizada por reação em cadeia da polimerase (PCR). Este foi o primeiro trabalho com flebotomíneos em cavernas de Rondônia e um total de 1,236 indivíduos foram coletados e identificados em 24 espécies e 10 gêneros.Evandromyia georgii foi coletada pela primeira vez em Rondônia, e as espécies mais abundantes foram Trichophoromyia ubiquitalis com 448 indivíduos (36.2%) seguida por T. octavioi com 283 (22.9%) e E. georgii com 179 (14.5%). No estudo de PCR, 17 pools foram analisados, sendo cinco positivos (T. auraensis - 3, Nyssomyia shawi eN. antunesi - 1 cada). A região do kDNA foi amplificada confirmando a presença de DNA de Leishmania. A fauna de flebotomíneos nestas cavernas foi considerada diversa quando comparada com estudos semelhantes de outras regiões. É possível que algumas espécies utilizem cavernas como abrigo temporário e local de procriação e outras sejam exclusivas deste ambiente. A detecção de DNA de Leishmania indica que este patógeno está circulando no ambiente cavernícola, sendo necessários mais estudos para conhecer o risco de transmissão de leishmanioses nestes locais com alto potencial turístico.


Subject(s)
Animals , Psychodidae/parasitology , Caves/parasitology , Leishmania/isolation & purification , Phlebotomus , Psychodidae/classification , Brazil , DNA, Protozoan/analysis , Insect Vectors , Leishmania/genetics
5.
Braz. j. biol ; 75(3s1): 168-173, Aug. 2015. tab, graf
Article in English | LILACS | ID: lil-769573

ABSTRACT

Abstract Brazil’s large territory displays significant richness in caves with about 12 thousand caves already recorded. Nevertheless, studies on bats in these environments are extremely scarce and fragmented. This study characterized the chiropteran fauna from two sandstone caves under the influence of the Belo Monte hydroelectric dam (Belo Monte UHE) in Pará, Brazil. The Kararaô and Kararaô Novo caves are located on the same ridge, 250 m apart. Three expeditions were carried out in 2013 and 2014, with a 4- to 5-month interval in between. A total of 589 animals were caught, 246 in the Kararaô cave and 343 in the Kararaô Novo cave. Fifteen species were recorded (13 in each cave) representing 79% similarity. With the exception of Vampyrum spectrum, which is not a cave species, the remaining recorded species were mostly cave bat species. Some species seemed to use the caves seasonally, although the basis of this pattern is still unknown. The most commonly observed species were Pteronotus personatus (dominant in the Kararaô cave), P. parnellii (dominant in the Kararaô Novo cave), and Lionycteris spurrelli, which accounted for 65% of all captures recorded for the two caves. Natalus macrourus is a species recorded in the Kararaô cave that is regionally threatened with extinction. Both caves are less than 500 m from the future reservoir; however, because the Kararaô cave entry is in an area that is lower than the reservoir, it can suffer alterations that would affect its dynamics. This raises great concern about the cave’s associated fauna.


Resumo O Brasil, com sua vasta porção territorial compreende uma alta riqueza de cavernas com cerca de 12 mil já registradas. Não obstante, os estudos sobre morcegos nestes ambientes são extremamente escassos e fragmentados. Neste estudo caracterizamos a quiropterofauna de duas cavernas areníticas sob influência da Usina Hidrelétrica de Belo Monte no Pará. As cavernas Kararaô e Kararaô Novo estão localizadas na mesma escarpa separadas por 250 m uma da outra. Foram realizadas três expedições com intervalo de 4 e 5 meses nos anos de 2013 e 2014. Realizou-se 589 capturas, sendo 246 na caverna Kararaô e 343 na Kararaô Novo. Quinze espécies foram registradas das quais duas foram exclusivas de cada caverna, equivalendo a 79% de similaridade. Excetuando-se o registro de Vampyrum spectrum, uma espécie não cavernícola, todas as demais são morcegos usualmente ou preferencialmente cavernícolas. Algumas espécies parecem usar sazonalmente as cavernas embora o porquê deste padrão seja ainda desconhecido. As espécies mais comumente observadas foram Pteronotus personatus (dominante na Kararaô), P. parnellii (dominante na Kararaô Novo) e Lionycteris spurrelli que totalizaram 65% das capturas somando-se os registros das duas cavernas. Uma espécie ameaçada regionalmente de extinção, Natalus macrourus, foi registrada na Kararaô. As duas cavernas estão a menos de 500 metros do futuro reservatório da UHE Belo Monte, porém, a entrada da caverna Kararaô está em uma cota mais baixa que a do limite do reservatório, podendo sofrer alteração em sua dinâmica, denotando maior preocupação em relação a sua fauna associada.


Subject(s)
Animals , Animal Distribution , Biodiversity , Chiroptera/physiology , Brazil , Caves
6.
Acta sci., Biol. sci ; 37(3): 345-351, jul.-set. 2015. ilus, tab
Article in English | LILACS | ID: biblio-847329

ABSTRACT

Quadrat sampling is a method used for a long time in plant ecology studies but only recently it has been used with focus on fauna. For the cave fauna samplings, there are rare works applying this methodology. The present study compared the methods of quadrat sampling with direct search qualitative for terrestrial cave fauna. For this, we conducted five sampling collections in a limestone cave in central Brazil. Quadrat sampling contributed with 121 exclusive species and 716 specimens and direct search qualitative method contributed with 91 exclusive species and 355 specimens. Mann-Whitney test evidenced significant differences between the two methods. We demonstrated that quadrat sampling method was slightly more efficient to analyze the species richness and much more effective to assess the abundance than the use of only direct search qualitative method, mainly considering tiny and/or cryptobiotic invertebrates (e.g., earth worms, symphylans, psocopterans, trichopterans, dipterans, small spiders, and small isopods). We recommend the association of different methods to test patterns in cave fauna, since incomplete sampling may lead to erroneous estimates and equivocated decisions about management, impact studies and cave conservation.


Amostragem por quadrados é um mé todo utilizado há muito tempo em estudos ecológicos botânicos e apenas recentemente tem sido utilizado com foco em estudos faunísticos. Para amostragens em cavernas, raros trabalhos aplicaram esta metodologia. Nosso trabalho compara o método de amostragem por quadrados com o de busca ativa qualitativa sobre a fauna cavernícola terrestre. Para tal, realizamos cinco eventos de coleta em uma caverna calcária do Brasil central. A amostragem, utilizando o método de quadrados, contribuiu com 121 espécies exclusivas e 716 espécimes. O método de busca ativa contribuiu com 91 espécies exclusivas e 355 espécimes. O teste de Mann-Whitney mostrou diferenças significativas entre os dois métodos. Demonstramos que o método de amostragem de quadrados foi sutilmente mais eficiente para acessar a riqueza de espé cies e muito mais efetivo para acessar a abundância do que apenas a utilização do método qualitativo de busca ativa, principalmente para invertebrados diminutos e/ou criptobióticos (por exemplo, vermes, sínfilos, psocópteros, tricópteros, dípteros, pequenas aranhas e pequenos isópodes). Recomendamos o uso de métodos combinados para o teste de padrões da fauna cavernícola, uma vez que amostragens incompletas podem levar a estimativas erradas e decisões equivocadas acerca de manejo, estudos de impacto e conservação de cavernas.


Subject(s)
Botany , Caves , Ecology , Fauna , Invertebrates , Methodology , Sampling Studies
7.
Neotrop. ichthyol ; 13(1): 113-122, Jan-Mar/2015. tab, graf
Article in English | LILACS | ID: lil-744500

ABSTRACT

The troglobitic electric fish Eigenmannia vicentespelaea, endemic to a single cave-system and included in the Brazilian Red List of Threatened Fauna, was studied in relation to population densities and habitat. For comparison, we used the epigean species, E. trilineata. We verify if the population densities recorded for E. vicentespelaea follow the pattern observed for other subterranean fishes; if there are seasonal fluctuations in these densities and which environmental variables explain the densities variation. We estimated abundances and population densities during three consecutive dry seasons concomitant with habitat description and physicochemical variables measurements. For E. vicentespelaea: in six stream reaches in the São Vicente II cave. For E. trilineata: from counts of active fish in rio da Lapa. The mean population density recorded for E. vicentespelaea is considered low (0.17 ind.m-2), similar to those of E. trilineata (0.13 ind.m-2), without significant differences between the years, but with marked fluctuations during dry seasons within each year, suggesting seasonality. Estimated population size of E. vicentespelaea is considered low (270 individuals in average). Depth, water current and substrate, allied to plant debris explain better the variation of densities. Urgent actions for E. vicentespelaea conservation include protection of headsprings in Terra Ronca State Park.


O peixe troglóbio Eigenmannia vicentespelaea, endêmico de um único sistema de cavernas e incluído na Lista Brasileira de Fauna Ameaçada foi estudado em relação às densidades populacionais e hábitat. Para comparação utilizamos a espécie epígea E. trilineata. Verificamos se as densidades populacionais registradas para E. vicentespelaea seguem o padrão observado para outros peixes subterrâneos; se há flutuações sazonais nestas densidades e quais variáveis ambientais explicam as variações nas densidades. Estimamos as abundâncias e densidades populacionais ao longo de três estações secas consecutivas, concomitantes à descrição do habitat e das variáveis físico-químicas. Para E. vicentespelaea: em seis trechos de rio ao longo da caverna São Vicente II. Para E. trilineata: na contagem de peixes ativos no rio da Lapa. A densidade populcional média registrada para E. vicentespelaea é baixa (0,17 ind.m-2), similar à observada para E. trilineata (0,13 ind.m-2), sem diferenças significativas entre os anos, mas com flutuações marcantes ao longo das estações secas dentro de cada ano, sugerindo sazonalidade. O tamanho populacional estimado para E. vicentespelaea é considerado pequeno (270 indivíduos em média). Profundidade, correnteza, substrato, aliadas à concentração de detrito vegetal explicam melhor a variação nas densidades. Ações urgentes para conservação de E. vicentespelaea incluem a proteção das nascentes do Parque Estadual de Terra Ronca.


Subject(s)
Animals , Endangered Species/statistics & numerical data , Ecosystem/adverse effects , Fishes/growth & development , Caves/chemistry
8.
Article in English | WPRIM | ID: wpr-725540

ABSTRACT

PURPOSE: The purpose of this study is to investigate the correlation between hemodynamics on three-phase CT and ultrasonography echogenecity of small hepatic cavernous hemangiomas (0.5 - 3 cm). MATERIALS AND METHODS: A total of 158 hepatic cavernous hemangiomas in 139 patients with normal liver parenchyma, who underwent ultrasonography and dynamic CT, were analyzed retrospectively over a six-year period. Two radiologists performed independent analysis of the echogenecity (hyperechoic to hypoechoic) on ultrasonography and hemodynamics (slow to rapid) on CT images using five-grade scales. Correlation between ultrasonography echogenecity scores and CT hemodynamics scores was examined using Spearman's correlation analysis. CT hemodynamics scores were also evaluated with respect to the size of the hepatic cavernous hemangiomas using Spearman's correlation analysis. RESULTS: The ultrasonography echogenecity scores showed significant correlation with the CT hemodynamics scores (r=0.364, p0.05). CONCLUSIONS: More rapid filling of contrast materials in small hepatic cavernous hemangiomas on dynamic CT suggests a greater decrease in echogenecity on ultrasonography and the echogenicity of small hepatic cavernous hemangiomas on ultrasonography can be predicted based on their hemodynamics on dynamic CT.


Subject(s)
Caves , Contrast Media , Hemangioma, Cavernous , Hemodynamics , Humans , Liver , Retrospective Studies , Weights and Measures
9.
Lima; s.n; 2013. 51 p. tab.
Thesis in Spanish | LILACS, LIPECS | ID: lil-713860

ABSTRACT

Objetivo: Establecer los determinantes de las micosis pulmonares prevalentes, en pacientes con sintomatología de enfermedad respiratoria crónica baja del Alto Huallaga, (Zona de Selva de los departamentos de Huánuco y San Martín), Perú. Materiales y Métodos: Estudio de casos y controles. Los casos fueron la totalidad de pacientes con enfermedades respiratorias crónicas bajas con prueba de inmunodifusión positiva para Histoplasma Capsulatum y/o Paraccocidiodes brasiliensis y/o Aspergilussp. y/o Aspergillus Fumigatus; de seis distritos (Rupa Rupa, Tocache, Uchiza, Santa Lucia, Aucayacu y Puerto Inca-Sungaro, que corresponden a las provincias de Leoncio Prado, Puerto Inca y Tocache, consideradas zonas tropicales y endémicas a micosis profundas y oportunistas), atendidos en los establecimientos de salud del MINSA y ESSALUD de los mencionados distritos, siendo 52 casos y el grupo de controles conformado por pacientes con enfermedades respiratorias crónicas bajas con prueba de inmunodifusión negativa para Histoplasma Capsulatum y/o Paraccocidiodes brasiliensis y/o Aspergilussp. y/o Aspergillus Fumigatus, siendo 116 controles incluidos en el estudio, a cada persona se le realizó el llenado de una ficha clínica-epidemiológica. Resultados: De 168 casos, 92 (54,76 por ciento) fueron de sexo femenino, edad promedio 47,62±2,9 años y tiempo de enfermedad de 7,4±14,8 meses. Los casos serológicamente positivos de micosis pulmonar fueron 15 Histoplasma capsulatum y 37 Aspergilosis spp. No se obtuvieron casos positivos de Paracoccidioides brasiliensis. En el análisis bivariado, sólo se encontró asociación con los factores procedencia zona rural (p=0,000), ingreso económico menor de 500 soles (p=0,002), visita a cueva (p=0,000) y agricultura básica (p=0,000). En el análisis multivariado de regresión logística se encontró asociación con los factores procedencia zona rural (p=0,000) y visita a cueva (p=0,000). Conclusiones: Se encontró asociación estadísticamente significativa...


Objective: To establish the determinants of pulmonary mycosis prevalent in patients with symptoms of chronic lower respiratory disease Alto Huallaga (Forest Area departments Huanuco and San Martin), Peru. Materials and Methods: A case-control study. The cases were all patients with chronic lower respiratory diseases with positive immunodiffusion test for Histoplasma capsulatum and/or Paraccocidiodes brasiliensis and/or Aspergillus sp. and/or Aspergillus fumigatus, six districts (Rupa Rupa, Tocache Uchiza, Santa Lucia, Aucuyacu and Puerto Inca-Sungaro, corresponding to the provinces of Leoncio Prado, Puerto Inca and Tocache considered endemic to tropical and deep mycosis opportunistic) treated in MOH health facilities and ESSALUD of said districts, with 52 cases and the control group consisted of patients with chronic lower respiratory disease with negative immunodiffusion test for Histoplasma capsulatum and/or Paraccocidiodes brasiliensis and/or Aspergillus sp. and/or Aspergillus fumigatus, with 116 controls included in the study, each person underwent filling a clinical-epidemiological profile. Results: Of 168 cases, 92 (54.76 per cent) were female, mean age 47.62±2.9 years and disease duration of 7.4±14.8 months. Serologically positive cases of pulmonary mycosis were 15 and 37 Histoplasma capsulatum Aspergillosis spp. There were no positive cases of Paracoccidioides brasiliensis. In the bivariate analysis, only found association with rural origin factors (p=0.000), income less than 500 soles (p=0.002), cave visit (p=0.000) and basic agriculture (p=0.000). In multivariate logistic regression analysis found the factors associated with rural origin (p=0.000) and cave visit (p=0.000). Conclusions: We found a statistically significant association, through multivariate analysis, with a history of pulmonary mycosis and chronic lower respiratory symptoms to factors origin (rural area), OR 25.2, Cl 95 per cent (9.7; 65.0), visit the cave owls, OR 6.1, Cl 95 per cent...


Subject(s)
Humans , Male , Female , Young Adult , Middle Aged , Aspergillus , Caves , Lung Diseases, Fungal/epidemiology , Histoplasma , Immunodiffusion , Paracoccidioides , Case-Control Studies
11.
Article in Korean | WPRIM | ID: wpr-186527

ABSTRACT

Angioleiomyoma is a rare benign tumor arising from vascular smooth muscle which commonly develops on the lower extremities of middle-aged women. It is rare to occur on the fingers. Angioleiomyoma is classified into three histological subtypes; solid, venous and cavernous. The solid type is most common but the cavernous type is very rare. We report a case of a 53-year-old female with a digital cavernous angioleiomyoma. The patient had a 2-year history of an asymptomatic and slowly enlarging 1.3x1.0 cm-sized subcutaneous nodule on the distal phalanx of her second left finger. Histopathologic examination showed a well-demarcated nodular tumor in the dermis, which composed of numerous, dilated vessels and bundles of smooth muscle fibers.


Subject(s)
Angiomyoma , Caves , Dermis , Female , Fingers , Humans , Lower Extremity , Muscle, Smooth , Muscle, Smooth, Vascular
12.
Article in Korean | WPRIM | ID: wpr-135478

ABSTRACT

Direct carotid cavernous fistula (CCF), which is an abnormal communication between the intracavernous carotid artery and the cavernous sinus, is a very rare condition that is generally associated with head trauma, intracavernous aneurysms, and certain connective-tissue diseases. The case of a patient with an infarction in the anterior choroidal artery territory is described herein. Cerebral angiography was performed during consecutive workups to investigate the discrepancy between the magnetic resonance angiography data. An unexpected direct CCF of the ipsilateral side of the infarction was found. It is possible that the CCF had influenced the development of the infarction in the anterior choroidal artery territory.


Subject(s)
Aneurysm , Arteries , Carotid Arteries , Cavernous Sinus , Caves , Cerebral Angiography , Cerebral Infarction , Choroid , Craniocerebral Trauma , Fistula , Humans , Infarction , Magnetic Resonance Angiography
13.
Article in Korean | WPRIM | ID: wpr-135475

ABSTRACT

Direct carotid cavernous fistula (CCF), which is an abnormal communication between the intracavernous carotid artery and the cavernous sinus, is a very rare condition that is generally associated with head trauma, intracavernous aneurysms, and certain connective-tissue diseases. The case of a patient with an infarction in the anterior choroidal artery territory is described herein. Cerebral angiography was performed during consecutive workups to investigate the discrepancy between the magnetic resonance angiography data. An unexpected direct CCF of the ipsilateral side of the infarction was found. It is possible that the CCF had influenced the development of the infarction in the anterior choroidal artery territory.


Subject(s)
Aneurysm , Arteries , Carotid Arteries , Cavernous Sinus , Caves , Cerebral Angiography , Cerebral Infarction , Choroid , Craniocerebral Trauma , Fistula , Humans , Infarction , Magnetic Resonance Angiography
14.
Article in English | WPRIM | ID: wpr-214430

ABSTRACT

OBJECTIVES: Vascular leiomyoma is an uncommon benign tumor of smooth muscle origin that arises from the muscularis layer of blood vessel walls. We report our experiences with the clinical manifestations, pathologic characteristics, and management of vascular leiomyoma in the head and neck. METHODS: The clinical records of 12 patients with vascular leiomyoma of the head and neck in the 11-year period were reviewed retrospectively. RESULTS: The 12 patients included nine men and three women. The locations of the tumors were variable, including nasal cavity, auricle, hard palate, upper lip, upper eyelid, and supraclavicular space. All but three patients reported an asymptomatic spherical mass; the other three patients complained of intermittent epistaxis or unilateral nasal obstruction resulting from the tumor originating in the nasal cavity. All tumors were painless. Computed tomography consistently revealed a well-defined, intensely enhanced small mass on the mucosa. No case was dignosed corretly as vascular leiomyoma before surgical excision. All patients underwent localized surgical excision of the tumor without recurrence. Five of 12 tumors (42%) were of solid type, four (33%) were of venous type, and three (25%) were of cavernous in histological classification. The histologic type was not related to gender, site of occurrence, and presence of pain. CONCLUSION: Vascular leiomyoma presents as a small, painless mass in various locations of the head and neck region. Localized surgical excision is the only way to make the diagnosis and yields excellent results.


Subject(s)
Angiomyoma , Blood Vessels , Caves , Epistaxis , Eyelids , Female , Glycosaminoglycans , Head , Humans , Lip , Male , Mucous Membrane , Muscle, Smooth , Nasal Cavity , Nasal Obstruction , Neck , Palate, Hard , Recurrence
15.
Neurointervention ; : 9-14, 2013.
Article in English | WPRIM | ID: wpr-730225

ABSTRACT

PURPOSE: The use of drug-eluting stent (DES) to treat intracranial stenosis has shown short-term success. However, there are no reports regarding the long-term results of DES. We present the long-term clinical outcome after DES stenting for symptomatic severe intracranial stenosis. MATERIALS AND METHODS: Our study included a consecutive series of 11 patients who underwent intracranial stenting using DES between March and July, 2006, during the time when bare metal stents were not available at our medical institution. The mean patient age was 59 years. Lesion location was the middle cerebral artery in five patients, the intradural vertebral artery in three, the basilar artery in one, the vertebrobasilar junction in one, and the cavernous internal cerebral artery in one patient. We evaluated the technical success, defined as reduction of residual stenosis or =50% at during the mean follow-up period of 55 months. One patient died of a sudden heart attack 59 months following the procedure which was regarded as unrelated to the cerebral lesion. CONCLUSION: Our study demonstrates that DES shows long-term stability and safety, and results in good clinical outcomes with a low rate of restenosis.


Subject(s)
Angiography , Atherosclerosis , Basilar Artery , Caves , Cerebral Arteries , Constriction, Pathologic , Drug-Eluting Stents , Follow-Up Studies , Heart , Humans , Middle Cerebral Artery , Stents , Thrombosis , Vertebral Artery
16.
Neurointervention ; : 15-22, 2013.
Article in English | WPRIM | ID: wpr-730224

ABSTRACT

PURPOSE: The aim of this study was to evaluate the feasibility and safety of the transfacial venous embolization of cavernous or paracavernous dural arteriovenous fistula (DAVF) in which approach via inferior petrosal sinus (IPS) was not feasible. MATERIALS AND METHODS: We identified the cases of transfacial venous embolization of cavernous sinus (CS) or adjacent dural sinuses from the neurointerventional database of three hospitals. The causes and clinical and angiographic outcomes of transfacial venous embolization were retrospectively evaluated. RESULTS: Twelve patients with CS (n = 11) or lesser wing of sphenoid sinus (LWSS, n = 1) DAVF were attempted to treat by transvenous embolization via ipsilateral (n = 10) or contralateral (n = 2) facial vein. Trans-IPS access to the target lesion was impossible due to chronic occlusion (n = 11) or acute angulation adjacent the target lesion (n = 1). In all twelve cases, it was possible to navigate through facial vein, angular vein, superior ophthalmic vein, and then CS. It was also possible to further navigation to contralateral CS through intercavernous sinus in two cases, and laterally into LWSS in one case. Post-treatment control angiography revealed complete occlusion of the DAVF in eleven cases and partial occlusion in one patient, resulting in complete resolution of presenting symptom in eight and gradually clinical improvement in four patients. There was no treatment-related complication during or after the procedure. CONCLUSION: In the cavernous or paracavernous DAVF in which trans-IPS approach is not feasible, the facial vein seems to be safe and effective alternative route for transvenous embolization.


Subject(s)
Angiography , Arteriovenous Fistula , Cavernous Sinus , Caves , Central Nervous System Vascular Malformations , Humans , Retrospective Studies , Sphenoid Sinus , Veins
17.
Article in English | WPRIM | ID: wpr-54469

ABSTRACT

Intraosseous arteriovenous malformation (AVM) in the craniofacial region is rare. When it occurs, it is predominantly located in the mandible and maxilla. We encountered a 43-year-old woman with Klippel-Trenaunay syndrome affecting the right lower extremity who presented with a left orbital chemosis and proptosis mimicking the cavernous sinus dural arteriovenous fistula. Computed tomography angiography revealed an intraosseous AVM of the sphenoid bone. The patient's symptoms were completely relieved after embolization with Onyx. We report an extremely rare case of intraosseous AVM involving the sphenoid bone, associated with Klippel-Trenaunay syndrome.


Subject(s)
Adult , Angiography , Arteriovenous Malformations , Cavernous Sinus , Caves , Central Nervous System Vascular Malformations , Exophthalmos , Female , Hemangioma , Humans , Klippel-Trenaunay-Weber Syndrome , Lower Extremity , Mandible , Maxilla , Orbit , Sphenoid Bone
18.
Article in English | WPRIM | ID: wpr-54468

ABSTRACT

Cerebral cavernous malformation with giant cysts is rare and literature descriptions of its clinical features are few. In this case study, the authors describe the clinical symptoms, radiological findings, and pathological diagnosis of cerebral cavernous malformations with giant cysts, reviewing the relevant literature to clearly differentiate this from other disease entities. The authors present a case of a 19-year-old male with a giant cystic cavernous malformation, who was referred to the division of neurosurgery due to right sided motor weakness (grade II/II). Imaging revealed a large homogenous cystic mass, 7.2x4.6x6 cm in size, in the left fronto-parietal lobe and basal ganglia. The mass had an intra-cystic lesion, abutting the basal portion of the mass. The initial diagnosis considered this mass a glioma or infection. A left frontal craniotomy was performed, followed by a transcortical approach to resect the mass. Total removal was accomplished without post-operative complications. An open biopsy and a histopathological exam diagnosed the mass as a giant cystic cavernous malformation. Imaging appearances of giant cavernous malformations may vary. The clinical features, radiological features, and management of giant cavernous malformations are described based on pertinent literature review.


Subject(s)
Basal Ganglia , Biopsy , Caves , Craniotomy , Glioma , Hemangioma, Cavernous, Central Nervous System , Humans , Male , Neurosurgery , Young Adult
19.
Article in Korean | WPRIM | ID: wpr-25065

ABSTRACT

PURPOSE: We report a case of a patient with ptosis, lid swelling, limitation of ocular movement, and visual disturbance after a trauma. The patient was diagnosed with unilateral orbital cellulitis, ophthalmic vein thrombosis and bilateral septic cavernous thrombosis and treated. CASE SUMMARY: After head and facial area trauma that occurred 1 month earlier, a 56-year-old man suffered from ongoing visual loss, limitation of ocular movement in all directions, proptosis in the left eye and abduction limitation of the right eye. A week before admission, mild fever and chills were also present. At admission, visual acuity of the left eye was no light perception and pupil reflex was lost. Brain MRA and MRI indicated dilation and thrombosis of the left superior ophthalmic vein, left orbital cellulitis and inflammation in bilateral cavernous sinuses. The patient was immediately treated with systemic antibiotics and steroid injection. Coagulase negative staphylococci were detected in blood culture. CONCLUSIONS: Infection caused by facial trauma spread through the facial area's venous plexus and caused orbital cellulitis. As a result, septic cavernous sinus thrombosis and ophthalmic vein thrombophlebitis occurred. Serious complications can occur after facial trauma, thus rapid differential diagnosis and appropriate treatment are important in determining prognosis.


Subject(s)
Anti-Bacterial Agents , Brain , Cavernous Sinus , Cavernous Sinus Thrombosis , Caves , Chills , Coagulase , Diagnosis, Differential , Exophthalmos , Eye , Fever , Head , Humans , Inflammation , Light , Orbital Cellulitis , Prognosis , Pupil , Reflex , Thrombophlebitis , Thrombosis , Veins , Visual Acuity
20.
Mem. Inst. Oswaldo Cruz ; 107(8): 1006-1010, Dec. 2012. ilus
Article in English | LILACS | ID: lil-660647

ABSTRACT

A new species of Brazilian phlebotomine sandfly found in Brazil, municipality of Diamantina, state of Minas Gerais, is described based on males and females collected in a quartzite cave. The body of spermathecae is continuous to the individual duct, lanky and tapering at the end, with conical shaped, not striated and presenting the head with dense setae. The male presents gonostyle with four spines and a small subterminal seta and gonocoxite with one group of persistent setae. The paramere is simple with a group of small setae on the dorsal apex. The morphological features of this new species permit its inclusion in the migonei group.


Subject(s)
Animals , Female , Male , Insect Vectors/anatomy & histology , Psychodidae/anatomy & histology , Brazil , Caves , Insect Vectors/classification , Psychodidae/classification
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