Duplex hemodynamic evaluation of hepatosplenic mansoni schistosomiasis.
Conventional ultrasonography highly contributes to a non invasive diagnosis of HS schistosomiasis (Cerri et al., 1984). The introduction of Doppler allowed new advances in the knowledge of the portal dynamics of this disease (Taylor et al. 1985; Moriyasu et al., 1986). The aim of this paper was to analyze the hemodynamic behavior of the portal vessels, considering caliper, maximum flow speed, direction of flow and preferential disposition of the collateral vessels. Thirty two patients with schistosomiasis mansoni with confirmed hepatosplenic form (HSSM), were analyzed. Fourteen patients with the intestinal form, have been analyzed as a control group. The results demonstrated that the maximum speed of the portal vein in the two groups has not been significantly different. Nevertheless, the diameter of the PV in the hepatosplenic group has been larger. The splenic vein presented speed and caliper larger than the superior mesenteric vein. The hepatic artery has been detected in only 40% of the cases. The hepatic veins presented normal caliper and spectral pattern. The duplex proved to be an useful technic complementary and non-invasive, in the study of HSSM.
Depto. de Radiologia, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, Brasil.
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DC
Paranaguá-Vezozzo
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Cerri
D000293:Adolescent; D000328:Adult; D001783:Blood Flow Velocity; D003097:Collateral Circulation; D006801:Humans; D007411:Intestinal Diseases, Parasitic / Q000503:physiopathology; D008102:Liver Circulation; D008109:Liver Diseases, Parasitic / Q000000981:diagnostic imaging* / Q000469:parasitology / Q000503:physiopathology; D008875:Middle Aged; D011168:Portal System / Q000000981:diagnostic imaging* / Q000473:pathology; D012039:Regional Blood Flow; D012555:Schistosomiasis mansoni / Q000000981:diagnostic imaging / Q000503:physiopathology*; D012720:Severity of Illness Index; D013154:Spleen / Q000098:blood supply* / Q000000981:diagnostic imaging; D013158:Splenic Diseases / Q000000981:diagnostic imaging / Q000469:parasitology / Q000503:physiopathology*; D014463:Ultrasonography