Etiology
Etiology
Portal hypertension should be divided intothree types as its blood flow obstructedpositions:pre-hepatictype:intra-hepatictype:post-hepatictype:
Portal hypertension should be divided into three types as its blood flow obstructed positions: • pre-hepatic type: • intra-hepatic type: • post-hepatic type:
. pre-hepatic typesthe portal vein trunkitself obstruction:icongenital deformityobliteration,stenosisthrombosisinfection,trauma
• pre-hepatic type: the portal vein trunk itself obstruction: ■congenital deformity obliteration, stenosis ■thrombosis infection, trauma
. post-hepatic type:hepaticveinsor inferior venacavainhepaticlevelobstructionincludedcongenitaldeformityorthrombosis,called Budd-Chiari syndromeliverHepatic vein thromhosisBudid-Chiani symdromepoital veinthromosissplenic vein thromosismmesemeenc veim thromosisspleen
• post-hepatic type: hepatic veins or inferior vena cava in hepatic level obstruction included congenital deformity or thrombosis, called BuddChiari syndrome
.intra-hepatic type:95%,a classificationis pre-sinusoidalandpost-sinusoidal obstructionsbypathology
• intra-hepatic type: 95%, a classification is pre-sinusoidal and post-sinusoidal obstructions by pathology