2010
DOI: 10.1590/s0100-39842010000200004
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Aspectos ultrassonográficos e hemodinâmicos da esquistossomose mansônica: avaliação pela ultrassonografia Doppler em áreas endêmicas

Abstract: OBJETIVO: Este estudo de campo objetivou identificar as alterações ultrassonográficas e hemodinâmicas indicativas da morbidade da esquistossomose mansônica em áreas endêmicas. MATERIAIS E MÉTODOS: Foram examinados pela ultrassonografia Doppler 554 pacientes esquistossomóticos em três áreas com níveis distintos de endemicidade: baixa endemicidade (n = 109); média endemicidade (n = 255) e alta endemicidade (n = 190). Para o estudo ultrassonográfico foi utilizado o protocolo da Organização Mundial da Saúde (Niame… Show more

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Cited by 6 publications
(5 citation statements)
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“…In the present study, the ovary was the anatomical site most affected by schistosomiasis. For (Azeredo et al, 2010), such finding could be justified by the hypothesis that there is a pathological shunt formation between the splenic vein and the left renal vein, in which the latter drains blood from ovarian veins, providing an access pathway to the parasite. Another hypothesis proposed by (Feldmeier et al, 1998) would be the parasite accessibility through anastomoses between the mesenteric veins (upper and lower to the ovarian veins).…”
Section: Discussionmentioning
confidence: 99%
“…In the present study, the ovary was the anatomical site most affected by schistosomiasis. For (Azeredo et al, 2010), such finding could be justified by the hypothesis that there is a pathological shunt formation between the splenic vein and the left renal vein, in which the latter drains blood from ovarian veins, providing an access pathway to the parasite. Another hypothesis proposed by (Feldmeier et al, 1998) would be the parasite accessibility through anastomoses between the mesenteric veins (upper and lower to the ovarian veins).…”
Section: Discussionmentioning
confidence: 99%
“…Direct and statistically significant correlations were observed between portal vein diameter, spleen size and measure of the right hepatic lobe in HS-HU patients, as well as portal vein diameter, measure of periportal space and size of the right hepatic lobe in patients from the endemic area (Table 2). It is known that the asymmetry of the hepatic lobes observed at US in chronic schistosomal patients with the hepatosplenic form of the disease, enlargement of the left lobe and reduction of the right lobe observed in up to 81% of the cases (27) , may be associated with a greater blood flow towards the left lobe (28) , besides findings of splenomegaly, periportal and perivesicular thickening, increased caliber of portal, splenic and superior mesenteric veins, and identification of collateral venous circulation (29)(30)(31) . According to Abdel-Wahab et al (7) splenomegaly, portal and splenic veins caliber, presence of collateral circulation, and the number and size of esophageal varices seen at endoscopy, are also related to the intensity of periportal fibrosis (5) .…”
Section: Discussionmentioning
confidence: 99%
“…Despite these morphological aspects described above, some angiographic studies of the hepatic vascular system in HSS revealed conflicting results, with a theory of little arterial participation in HSS abnormal liver hemodynamics. They observed reduction in the hepatic artery diamete, with decreased intrahepatic arterial vascularization [8,26,27] . The authors suggested that, as a result of massive splenomegaly, there would be a hypertrophy of the splenic artery with consequent diversion of the hepatic artery flow, a mechanism similar to the splenic artery steal syndrome, described in blood flow [37,38] .…”
Section: Intrahepatic Vascular Changesmentioning
confidence: 96%
“…Vascular changes in hepatic artery territory are still controversial in literature, with some authors advocating no change, while others reporting a greater modification of this sector in hepatosplenic schistosomiasis (HSS) [4,[6][7][8][9][10][11][12] . The purpose of this analytical review is to describe the pathophysiology of schistosomal liver disease Conflict-of-interest statement: The authors declare that there is no conflict of interest regarding the publication of this paper.…”
Section: Introductionmentioning
confidence: 99%