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1.
Rev. Soc. Bras. Med. Trop ; 46(4): 472-477, Jul-Aug/2013. tab, graf
Article in English | LILACS | ID: lil-683328

ABSTRACT

Introduction This study evaluates the factors associated with the development of severe periportal fibrosis in patients with Schistosoma mansoni. Methods A cross-sectional study was conducted from April to December 2012 involving 178 patients infected with S. mansoni who were treated in the Hospital das Clínicas of Pernambuco, Brazil. Information regarding risk factors was obtained using a questionnaire. Based on the patients' epidemiological history, clinical examination, and upper abdomen ultrasound evaluation, patients were divided into 2 groups: 137 with evidence of severe periportal fibrosis and 41 patients without fibrosis or with mild or moderate periportal fibrosis. Univariate and multivariate analyses were conducted using EpiInfo software version 3.5.5. Results Illiterate individuals (30.1%) and patients who had more frequent contact with contaminated water in towns in the Zona da Mata of Pernambuco (33.2%) were at greater risk for severe periportal fibrosis. Based on multivariate analysis, it was determined that an education level of up to 11 years of study and specific prior treatment for schistosomiasis were preventive factors for severe periportal fibrosis. Conclusions The prevailing sites of the severe forms of periportal fibrosis are still within the Zona da Mata of Pernambuco, although there has been an expansion to urban areas and the state coast. Specific treatment and an increased level of education were identified as protective factors, indicating the need for implementing social, sanitary, and health education interventions aimed at schistosomiasis to combat the risk factors for this major public health problem. .


Subject(s)
Adolescent , Adult , Aged , Aged, 80 and over , Female , Humans , Male , Young Adult , Educational Status , Liver Cirrhosis/drug therapy , Portal Vein/parasitology , Schistosomiasis mansoni/drug therapy , Splenic Diseases/drug therapy , Analysis of Variance , Brazil , Case-Control Studies , Cross-Sectional Studies , Liver Cirrhosis/parasitology , Liver Cirrhosis , Portal Vein/ultrastructure , Severity of Illness Index , Schistosomiasis mansoni , Splenic Diseases/parasitology , Splenic Diseases
2.
Rev. Soc. Bras. Med. Trop ; 43(2): 129-134, Mar.-Apr. 2010. tab, ilus
Article in English | LILACS | ID: lil-545765

ABSTRACT

INTRODUCTION: Abdominal palpation and ultrasound findings among patients from an endemic area for schistosomiasis in Brazil who had been followed up for 27 years were compared. METHODS: In 2004, 411 patients from Brejo do Espírito Santo, in the State of Bahia, were selected for the present investigation after giving their written informed consent. Based on clinical data, they were divided into three groups: 41 patients with evidence of liver fibrosis in 2004 (Group 1); 102 patients with evidence of liver fibrosis in the past (1976-1989) but not in 2004 (Group 2); and 268 patients without evidence of liver fibrosis at any time during the 27-year follow-up (Group 3). All of the patients underwent abdominal ultrasound in which the examiner did not know the result from the clinical examination. The data were stored in a database. RESULTS: The prevalence of periportal fibrosis on ultrasound was 82.9 percent, 56.9 percent and 13.4 percent in Groups 1, 2 and 3, respectively. In the presence of hard, nodular liver or prominent left lobe and a hard palpable spleen, ultrasound revealed periportal fibrosis in 70.9 percent. However, periportal fibrosis was diagnosed using ultrasound in 25.4 percent of the patients in the absence of clinical evidence of liver involvement. Thus, ultrasound diagnosed periportal fibrosis 3.1 times more frequently than clinical examination did. CONCLUSIONS: Although clinical examination is important in evaluating morbidity due to Manson's schistosomiasis in endemic areas, ultrasound is more accurate in diagnosing liver involvement and periportal fibrosis.


INTRODUÇÃO: Neste estudo, se comparou os achados da palpação abdominal e do ultrassom em pacientes de área endêmica de esquistossomose que foram acompanhados por 27 anos no Brasil. MÉTODOS: Em 2004, 411 pacientes de Brejo do Espírito Santo, no estado da Bahia, após consentimento informado e por escrito foram selecionados para o presente estudo. Baseando-se no exame clínico eles foram divididos em 3 grupos: 41 (Grupo 1) com evidência de fibrose hepática no ano de 2004; 102 (Grupo 2) com evidência de fibrose hepática no passado (1976-1989) mas não em 2004; e 268 (Grupo 3) sem evidência de fibrose hepática em 27 anos de seguimento. Todos foram submetidos a exame ultrassonográfico do abdome em que o examinador não sabia o resultado do exame clínico. Os dados foram armazenados em banco de dados. RESULTADOS: A prevalência de fibrose periportal ao ultrassom foi de 82,9 por cento, 56,9 por cento e 13,4 por cento nos Grupos 1, 2 e 3, respectivamente. Na presença de fígado duro, nodular ou lobo esquerdo proeminente e baço palpável duro, o ultra-som revelou fibrose periportal em 70,9 por cento. Porém, fibrose periportal foi diagnosticada através do ultrassom em 25,4 por cento dos pacientes, na ausência de evidência clínica de envolvimento hepático. Assim, o ultrassom diagnosticou fibrose periportal 3,1 vezes mais frequentemente que o exame clínico. CONCLUSÕES: O exame clínico tem importância na avaliação da morbidade da esquistossomose mansônica em áreas endêmicas, mas o ultrassom mostra-se mais preciso quando se pretende diagnosticar o envolvimento hepático e a fibrose periportal.


Subject(s)
Adult , Female , Humans , Male , Middle Aged , Liver Cirrhosis/diagnosis , Palpation , Portal Vein/parasitology , Schistosomiasis mansoni/diagnosis , Splenic Diseases/diagnosis , Brazil , Cross-Sectional Studies , Follow-Up Studies , Liver Cirrhosis/parasitology , Liver Cirrhosis , Portal Vein/pathology , Portal Vein , Schistosomiasis mansoni , Splenic Diseases/parasitology , Splenic Diseases
3.
Rev. Soc. Bras. Med. Trop ; 40(5): 505-511, out. 2007. ilus, tab
Article in English | LILACS | ID: lil-467007

ABSTRACT

Abdominal ultrasound can be a useful tool for diagnosing periportal fibrosis related to Schistosoma mansoni infection, and also for planning and monitoring the evolution of hepatic morbidity following control measures. We evaluated the standardized ultrasound methodology proposed by the World Health Organization for detecting periportal fibrosis and portal hypertension, among patients from an endemic area in Venezuela, and the impact of praziquantel treatment 3-5 years later. After chemotherapy, complete reversal of periportal lesions was observed in 28.2 percent of the cases and progression of the disease in 5.1 percent. Improvement in the hepatic disease started with a reduction in the periportal thickening followed by a decrease in the size of the left hepatic lobe, spleen and mesenteric and spleen veins. Ultrasound confirmed the clinical findings after chemotherapy among the patients with reversal of the disease. However, in patients with more advanced disease, these findings were contradictory. There was no correlation between evolution of the disease seen on ultrasound and age, intensity of infection or serological findings.


O ultra-som abdominal pode ser uma ferramenta útil para o diagnóstico da fibrose periportal relacionada à infecção por Schistosoma mansoni, e também para planejar e monitorar a evolução da morbidade hepática após medidas de controle. Nós avaliamos a metodologia padronizada no ultra-som, proposta pela Organização Mundial da Saúde, para a detecção da fibrose periportal e hipertensão porta, em pacientes de área endêmica da Venezuela e o impacto do tratamento com praziquantel 3-5 anos depois. Após quimioterapia, houve reversão completa das lesões periportais em 28,2 por cento dos casos e progressão da patologia em 5,1 por cento. A melhora da patologia hepática começou com a redução do espessamento periportal seguida pela diminuição do tamanho do lobo esquerdo, baço e veias mesentérica e esplênica. O ultra-som confirma os achados clínicos após quimioterapia em pacientes com reversão da patologia; contudo, naqueles com patologia mais avançada, estes achados foram contraditórios. Não houve correlação entre evolução da patologia ultra-sonográfica com idade, intensidade da infecção ou achados sorológicos.


Subject(s)
Adolescent , Adult , Child , Female , Humans , Male , Middle Aged , Anthelmintics/therapeutic use , Liver Cirrhosis/drug therapy , Portal Vein/parasitology , Praziquantel/therapeutic use , Schistosomiasis mansoni/drug therapy , Follow-Up Studies , Feces/parasitology , Liver Cirrhosis/parasitology , Liver Cirrhosis/pathology , Liver Cirrhosis , Parasite Egg Count , Portal Vein/pathology , Portal Vein , Severity of Illness Index , Schistosomiasis mansoni/complications , Schistosomiasis mansoni , Venezuela
4.
Mem. Inst. Oswaldo Cruz ; 101(supl.1): 279-282, Oct. 2006. ilus
Article in English | LILACS | ID: lil-441259

ABSTRACT

Abdominal ultrasound (US) has been widely used in the evaluation of patients with schistosomiasis mansoni. It represents an important indirect method of diagnosis and classification of the disease, and it has also been used as a tool in the evaluation of therapeutic response and regression of fibrosis. We describe the case of a man in whom US showed solid evidence of schistosomal periportal fibrosis and magnetic resonance imaging revealed that periportal signal alteration corresponded to adipose tissue which entered the liver togheter with the portal vein.


Subject(s)
Animals , Humans , Male , Middle Aged , Liver Cirrhosis , Liver Diseases, Parasitic , Portal Vein , Schistosomiasis mansoni , Liver Cirrhosis/parasitology , Liver Cirrhosis/pathology , Liver Cirrhosis , Liver Diseases, Parasitic/parasitology , Liver Diseases, Parasitic/pathology , Liver Diseases, Parasitic , Magnetic Resonance Imaging , Portal Vein/parasitology , Portal Vein/pathology , Portal Vein , Severity of Illness Index , Schistosomiasis mansoni/complications , Schistosomiasis mansoni/pathology , Schistosomiasis mansoni
5.
Rev. Soc. Bras. Med. Trop ; 38(1): 33-37, jan.-fev. 2005. tab
Article in English | LILACS | ID: lil-420211

ABSTRACT

Duzentos e vinte e três indivíduos de área endêmica de baixa morbidade para esquistossomose e nove pacientes hospitalizados com a forma hepatoesplênica foram submetidos ao exame de fezes e clínico e à ultra-sonografia do abdômen. De acordo com os resultado dos exames de fezes e do ultra-som eles foram agrupados do seguinte modo: G1 - 63 indivíduos sem ovos de Schistosoma mansoni nas fezes; G2 - 141 indivíduos apresentando ovos de Schistosoma mansoni nas fezes, sem ecogenicidade periportal. G3 — 19 indivíduos com ovos de Schistosoma mansoni nas fezes e ecogenicidade periportal entre 3-6mm.; G4 — 9 pacientes hepatesplênicos com ecogenicidade periportal > 6mm. Pelo exame físico do abdômen, a hepatomegalia na linha hemiclavicular direita foi constatada em G1, G2 E G3, respectivamente, em 11,1, 12,1 e 26,3%. Nos grupos G1, G2 e G3, houve espessamento periportal somente em esquistossomáticos (8,5%). Alterações patológicas leves em pacientes, as quais não puderam ser detectadas pelo exame clínico, foram evidenciadas no fígado pelo ultra-som e podem ser devidas à fibrose. O grau de fibrose periportal leve foi diminuído em 57,9% dos pacientes 12 meses após tratamento da esquistossomose com oxamniquine. Na ultra-sonografia, a média da medida do lobo esquerdo do fígado dos indivíduos de G3 foi maior que a de G1 e, a de G4 maior que a de G1 e G2. O tamanho médio do baço de G4 foi significativamente maior que o dos outros grupos e o de G3 foi maior que o de G1 e G2.


Subject(s)
Adolescent , Adult , Aged , Animals , Child , Female , Humans , Male , Middle Aged , Liver Diseases, Parasitic/diagnosis , Schistosomiasis mansoni/diagnosis , Splenic Diseases/diagnosis , Case-Control Studies , Endemic Diseases , Feces/parasitology , Liver Cirrhosis/drug therapy , Liver Cirrhosis/parasitology , Liver Cirrhosis , Liver Diseases, Parasitic/drug therapy , Liver Diseases, Parasitic , Oxamniquine/therapeutic use , Parasite Egg Count , Portal Vein/parasitology , Portal Vein , Severity of Illness Index , Schistosomiasis mansoni/drug therapy , Schistosomiasis mansoni , Schistosomicides/therapeutic use , Splenic Diseases/drug therapy , Splenic Diseases
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