SPLENIC SIZE RELATION TO THE PORTAL VEIN DOPPLER ANALYSIS IN SUDANESE LIVER TRANSPLANTS
Ashraf Mustafa Mohammed OsmanMohammed Al Fadil Gar al nabyMaha Esmeal Ahmed EsmealBabiker Abd Elwahab Awad alla
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Abstract:
The purpose of this study was to identify the specific Doppler criteria for the portal vein as well as the spleen length or volume in liver transplants. A relative study was done after performing venous Doppler sonographic studies in 45 liver transplant cases (4 whole liver, 41 lobar) with no known vascular complications. The ultrasonic Doppler study were targeted to the portal vein flow direction, flow velocity in Doppler level and the caliber in gray scale level. Average gray scale and color flow mapping appearances as well as normal monophasic wave character was found. The following Doppler parameters were evaluated: for the portal veins, venous pulsatility index. There were no cases of portal vein obstruction found in our sample (neither stenosis, nor occlusion). Mean portal vein velocity was (less than 55 cm /s), the splenic length was (13.7±1.5). The relation between the portal venous index, and the splenic length was built. Both are useful parameters for diagnosing liver transplants complications.Keywords:
Splenic vein
Color doppler
Prepancreatic portal vein is an unusual condition. Around 100 cases of prepancreatic preduodenal portal vein have been reported. But only 11 cases of prepancreatic postduodenal portal vein have been reported till now. Here, we report a peculiar case of prepancreatic formation of portal vein associated with prepancreatic superior mesenteric artery. The formation of prepancreatic portal vein by the union of superior mesenteric vein with the splenic vein which came anteriorly by piercing the body of pancreas to form the portal vein in front of the neck of pancreas is an exceptional occurrence which has never been reported in world literature so far. Radiologists and surgeons need to be aware of these unfamiliar prepancreatic vessels to avoid major intraoperative injuries.
Right gastric vein
Splenic vein
Superior mesenteric vein
Inferior mesenteric vein
Mesenteric Vein
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The short saphenous vein represents the post axial vein of developing limb bud. It is the continuation of lateral marginal vein. The short saphenous vein terminates in the popliteal vein in the popliteal fossa. Short saphenous vein varicosities are common. Recurrence of varicose vein after surgery is a frequent cause of medico legal problems. A thorough analysis on the presence of variations in the short saphenous vein and its termination is mandatory. Hence, the present study is conducted to observe the variations of the short saphenous vein in cadavers, enlightening the clinical significance for a better therapeutic outcome. 50 lower limbs from 25 embalmed cadavers of both the sexes are used for this study. Conventional dissection method is followed. In the present study, 54% of short saphenous vein terminates only into the popliteal vein at the popliteal fossa, 30% short saphenous vein terminates into the great saphenous vein, 8% of short saphenous vein terminates into the inferior gluteal vein and 8% of short saphenous vein terminates into the femoral vein. A proper knowledge about the anatomy of the short saphenous vein and its communications with other veins and mode of termination of short saphenous vein is mandatory for a safe and successful intervention. The high variations in the venous system, makes it to be a subject of interest, thereby emphasizing multidisciplinary studies for a better clinical outcome
Great saphenous vein
Popliteal fossa
Popliteal vein
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Color doppler
Hepatic portal vein
Doppler ultrasound
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Splenic vein
Hepatic portal vein
Portal circulation
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Objective To research portal vein cavernous transformation of splenic vein in patients with NF-κB, VEGF expression, to explore the forming mechanism of portal vein cavernous transformation of splenomegaly. Methods 7 cases of portal vein degeneration in patients with splenic vein paraffin sections as an experimental group, eight cases of traffic accident in the spleen contusion and laceration of the splenic vein paraffin sections as a control group, the determination of NF-κB, VEGF expression by immunohistochemistry, the t-test test significant difference between the two. Results NF-κB, the splenic vein of the experimental group, VEGF positive particles were significantly higher than the control group, semi-quantitative determination of the expression level higher than the control of the experimental group, both statistically significant (P0.05). Conclusion The portal vein cavernous transformation of vascular lesions and splenomegaly formation may be related to NF-κB and VEGF.
Splenic vein
Hepatic portal vein
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Background: To determine the types, frequency and clinical implications of formation of variations of portal vein with routine abdominal multi detector CT.Methods: MDCT images of 265 patients without any pathology were evaluated. Types and frequencies of formation variations of portal vein were determined.Results: Portail vein formation variations were observed in 186 (70.15%) of our study population. Normal portal vein was detected in 79 (29.8%) images. These variations were classified according to frequency. Normal anatomic structure was determined as type 1. Type 1 was observed in 79 (29.8%) images. As type 2 variation, left gastric vein flows into splenic vein instead of portal vein (60.75%). The type 3 of portal vein variation as uniting of superior mesenteric vein, inferior mesenteric vein and splenic vein at the same trunk to form portal vein was determined 9.43%.Conclusions: This study, which was performed to determine the anatomical variations of portail vein, makes the type 2 variation rate higher than the other studies. This information is different from the classical anatomy information. In addition, we are able to make the radiologists and surgeons highly capable of both recognition and functionality of the results.
Splenic vein
Superior mesenteric vein
Inferior mesenteric vein
Right gastric vein
Hepatic portal vein
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Great saphenous vein
Electrical conduit
Superficial vein
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Great saphenous vein
Derivation
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The purpose of this study was to evaluate thin-section helical CT for the frequency of visualization of the peripancreatic veins, the venous anatomy at the head of the pancreas, and variations of the venous anatomy.We performed 30-sec helical CT of the pancreas with one breath-hold and a 3-mm scanning collimation in 50 patients. The scan was started 60 sec after injection of an i.v. contrast medium at the rate of 2 ml/sec (total amount of contrast medium, 100 ml). The axial scan data were reviewed for the following information: the frequency of CT visualization of the peripancreatic veins (anterior superior pancreaticoduodenal vein, first jejunal vein, gastrocolic trunk, inferior mesenteric vein, left gastric vein, middle colic vein, posterior superior pancreaticoduodenal vein, right colic vein, and right gastroepipolic vein) and the anatomic relationship between the large portal venous system (portal vein, superior mesenteric vein, and splenic vein) and its tributaries.The frequency of visualization on CT of each vessel was gastrocolic trunk, 100%; right gastroepiploic vein, 100%; first jejunal vein, 96%; inferior mesenteric vein, 88%; left gastric vein, 80%; posterior superior pancreaticoduodenal vein, 72%; middle colic vein, 72%; right colic vein, 64%; and anterior superior pancreaticoduodenal vein, 50%. The anatomic relationship between the large portal venous system and its tributaries was as follows: The left gastric vein drained into the splenic vein-portal vein confluence (46%), into the splenic vein (32%), and into the portal vein (22%); the inferior mesenteric vein drained into the splenic vein (46%), the splenic vein-superior mesenteric vein confluence (25%), and the superior mesenteric vein (29%). The posterior superior pancreaticoduodenal vein drained into the portal vein above the splenic vein-portal vein confluence (mean distance, 0.3 cm). The middle colic vein, gastrocolic trunk, and first jejunal vein drained into the superior mesenteric vein below the splenic vein-portal vein confluence (mean distances of 2.4 cm, 3.0 cm, and 3.7 cm, respectively).Thin-section helical CT scans provide good visualization of the peripancreatic veins.
Superior mesenteric vein
Right gastric vein
Inferior mesenteric vein
Splenic vein
Mesenteric Vein
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Right gastric vein
Hepatic portal vein
Liver circulation
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