RÉSUMÉ
This work aims to estimate prevalence and evaluate risk factors of leishmanin-skin test positivity. A cross-sectional leishmanin skin test study was carried out on a sample of 3190 healthy volunteers living in the gouvernorates of Kairouan and Kasserine. Age standardized prevalence of leishmanin-skin test positivity was 45.9% [CI95% = [43.9-47.9]] confirming the hyper endemicity of this region. The rate of leishmanin-skin test positivity ranged from 75.9% [CI95% = [71.9-79.5]] in Zaghdoud [Kairouan] to 6.5% [CI95% = [3.7-11.01] in Abdeladhim [Kasserine]. There is no significant difference between men and women suggesting a similar exposure to infection. In the districts of Zaghdoud, Sidi Amor, El Hajeb and chbika, age specific rates showed a rapid increasing positive prevalence with age reaching a proportion exceeding 80% after the age of 15 years. However, the age specific prevalence from other delegations showed a progressive increasing trend with age, with a low rate for younger children and a plateau of 75% after 45 years. Multivariate analysis of leishmanin-skin test positivity risk factors showed that only district and age are determinants of this infection
RÉSUMÉ
The imaging of portal cavernoma is easy. However the flow modifications in hepatic parenchyma may set the differential diagnosis with an infiltrative tumor of the liver. The authors report the case of a portal cavernoma in order to highlight the CT features of hepatic parenchymography in the course of cavernous development