ABSTRACT
El presente trabajo describe la arborización del sistema venoso portal intrahepático desde los enfoques anatómico, radiológico y ecográfico. Se realizaron 5 preparados anatómicos mediante inyección de resinas plásticas y posterior corrosión. Por radiología se contrastó el árbol portal en una pieza anatómica. Se realizaron estudios ecográficos bidimensionales y Doppler en 13 caninos de raza Beagle. Estos procedimientos permitieron a los autores comparar la tridimensionalidad de los preparados anatómicos con la bidimensionalidad de los estudios por imágenes.
This article describes the distribution of the intra-hepatic portal vein system by means of anatomy, radiology and ultrasound echo-scan approach. Five anatomical resin-embedded vein preparations with posterior corrosion have been done. The portal tree was depicted by radiology. Ultrasound B-mode and Doppler Scans were performed on 13 beagle dogs. These procedures allowed the authors to compare the three-dimensional preparations with the two-dimensional imaging methods.
Subject(s)
Portal Vein/diagnostic imaging , Dogs/anatomy & histology , Hepatic Veins/diagnostic imaging , Liver/diagnostic imaging , Portal Vein/diagnostic imaging , Cadaver , Portography , Corrosion Casting , Ultrasonography, Doppler , Hepatic Veins/anatomy & histology , Liver/blood supplyABSTRACT
Prepancreatic postduodenal portal vein (PPPV) is a rare anomaly in which the portal vein runs between the pancreatic head and the duodenum. Understanding of this portal vein anomaly is important to avoid devastating complications, including portal vein ligation, resection or intraoperative hemorrhage. A 28-year-old female patient presented with right upper quadrant pain that she had suffered with for 2 days. Before performing laparoscopic cholecystectomy, we detected an abnormal shaped portal vein that ran in front of the pancreatic head and posterior to the duodenum on the CT scan. We report here on a rare case of prepancreatic postduodenal portal vein that was incidentally discovered on the CT axial images and coronally reformated images, in addition to observing it on the conventional portography.
Subject(s)
Adult , Female , Humans , Cholecystectomy, Laparoscopic , Duodenum , Head , Hemorrhage , Ligation , Portal Vein , Portography , Tomography, X-Ray ComputedABSTRACT
PURPOSE: To determine the prevalence of variations in the intrahepatic portions of portal veins, as visualized by arterial portograms, and to examine the surgical implications of these findings in Koreans. MATERIALS AND METHODS: Five hundred and nineteen arterial portograms of 519 patients with no evidence of vascular tumor invasion or distortion were retrospectively reviewed. In all patients, the main, right, right anterior, right posterior and left portal vein were visualized. RESULTS: Variations in intrahepatic portal anatomy were found in 102 patients (19.6%) and involved an immediate trifurcation of the main portal vein in 82 (15.8%) a right posterior segment from the main portal vein in ten (1.9%), a right anterior segment from the left portal vein in nine (1.7%) and an absent horizontal portion from the left portal vein in one (0.2%). CONCLUSION: On arterial portogram, variations in the intrahepatic portions of the portal veins are frequently seen. The recognition of such variations is important in the preoperative evaluation of patients with hepatic tumors, since the variations may have implications for tumor resection, for the localization of tumor thrombi and in interventional radiologic procedures involving the portal vein.