No abstract available.
Embolism ; Mesenteric Arteries ; Mesenteric Artery, Superior

No abstract available.
Embolism ; Mesenteric Arteries ; Mesenteric Artery, Superior

PURPOSE: Acute mesenteric ischemia (AMI) is one of the most dramatic abdominal emergencies. The most common cause of AMI is a thrombo-embolism of the mesenteric artery or vein. The aim of this study was to evaluate the feasibility of CT angiography for evaluating mesenteric vascular steno-occlusive lesion in AMI. MATERIALS AND METHODS: Fifteen patients with clinically and angiographically proven AMI underwent a two-phase CT. The CT angiographic images were reconstructed using a 3D rendering algorithm, such as the maximum intensity projection and volume-rendering. All the CT angiographic images were reviewed with respect to stenosis or occlusion of mesenteric vessel by the consensus of two radiologists, and were correlated with the findings of digital subtraction angiography. RESULTS:Digital subtraction angiography (DSA) visualized 60 mesenteric vessels including the superior mesenteric artery (n=15) and vein (n=15), and the inferior mesenteric artery (n=15) and vein (n=15). DSA showed steno-occlusive lesions in 16 mesenteric vessels (13 superior mesenteric arteries, two superior mesenteric veins, and one inferior mesenteric artery). CT angiography detected steno-occlusive lesions in 16 mesenteric vessels (12 superior mesenteric arteries, one superior mesenteric vein, and three inferior mesenteric arteries). The sensitivity, specificity, and accuracy of CT angiography for evaluating mesenteric vascular steno-occlusive lesion were 87.5%, 95.4%, and 93.3%, respectively. CONCLUSION: CT angiography is an useful adjunct to abdominal CT in an AMI setting on account of its ability to detect the causes of AMI such as a steno-occlusive lesion of the mesenteric vessel.
Angiography* ; Angiography, Digital Subtraction* ; Consensus ; Constriction, Pathologic ; Emergencies ; Humans ; Ischemia* ; Mesenteric Arteries ; Mesenteric Artery, Inferior ; Mesenteric Artery, Superior ; Mesenteric Veins ; Sensitivity and Specificity ; Tomography, X-Ray Computed ; Veins

Anatomical variation in the abdominal aorta is common and extremely important. We found a rare variation of the abdominal aorta in a Korean male cadaver during a routine dissection course. The superior mesenteric artery gives off a small branch for the descending colon, named accessory left colic artery due to its distribution. The inferior mesenteric artery arises normally from the abdominal aorta and supplied the sigmoid colon and the upper part of the rectum. This variation was rare and it has not been reported previously in Korean. Knowledge of the arterial variation in this region is considerable important during abdominal surgery and invasive procedures. The authors describe this previously unreported case and discuss the clinical implications of such a variant with a brief review of the literature.
Aorta, Abdominal ; Arteries ; Cadaver ; Colic ; Colon, Descending ; Colon, Sigmoid ; Humans ; Male ; Mesenteric Artery, Inferior ; Mesenteric Artery, Superior ; Rectum

Accessory renal artery (ARA) is a kind of developmental anomaly in renal artery. It is important in respect to clinical medicine, for example primary hypertension, renovascular disease, inferior vena caval obstruction, ureteral obstruction, occurrence of other vascular anomalies such as accessory renal veins, surgical importance and renal transplantation. However, up to few research of ARA was reported in dissection of cadavers. In our dissecting theater, 12 accessory renal arteries for 10 cadavers were found during dissection the 22 cadavers from 1995 to 1996. 1. Two cases were bilateral and 8 cases were unilateral accessory renal arteries. 2. Seven cases were left and 5 cases were right accessory renal arteries. 3. Two cases originated at the abdominal aorta between celiac trunk and superior mesenteric artery, 7 cases originated between superior mesenteric artery and inferior mesenteric artery, and 3 cases originated below inferior mesenteric artery. 4. Seven cases have no branches during their courses, 4 cases have 3 branches, and a case has 2 branches. 5. Seven cases entered into renal parenchyma through renal hilum, 5 cases entered into apical and arterosuperior segments, and 6 cases entered into inferior segment.
Aorta, Abdominal ; Cadaver ; Clinical Medicine ; Hypertension, Renovascular ; Kidney Transplantation ; Mesenteric Arteries ; Mesenteric Artery, Inferior ; Mesenteric Artery, Superior ; Renal Artery* ; Renal Veins ; Ureteral Obstruction

OBJECTIVES: Compared with all other patterns, isolated right colon ischemia has been found to be more associated with coronary artery disease and a poor prognosis. However, there has been no research on comparing isolated left side ischemic colitis (ILIC) and non-ILIC with vascular assessment. The aim of the present study was to evaluate the clinical and laboratory findings between these two different forms of ischemic colitis (IC). METHODS: We retrospectively investigated differences in clinical features, course, and mesenteric vascular (superior mesenteric artery, SMA; inferior mesenteric artery, IMA) findings between ILIC and non-ILIC patients who were hospitalized at Kosin University Gospel Hospital from 2004 to 2010. RESULTS: Our study population comprised 221 patients, all of whom met our entry criteria of biopsy-proven or -compatible IC. Of the 221 patients, 46 (20.8%) had non-ILIC. Congestive heart failure and hypercholesterolemia were more frequently observed in the non-ILIC group (P = 0.003 and P = 0.020, respectively). SMA atherosclerosis and SMA stenosis were more frequently observed in the non-ILIC group (P = 0.006 and P = 0.001, respectively). Recovery periods were longer in the non-ILIC group (P = 0.039), and mortality was lower in the ILIC group (6.9% vs. 17.3%, P = 0.026). CONCLUSIONS: ILIC has favorable outcomes compared with non-ILIC. Furthermore, non-ILIC showed a close relationship with SMA atherosclerosis and SMA stenosis, which should be investigated carefully in the clinical field.
Atherosclerosis ; Colitis, Ischemic* ; Colon ; Constriction, Pathologic ; Coronary Artery Disease ; Heart Failure ; Humans ; Hypercholesterolemia ; Ischemia ; Mesenteric Arteries ; Mesenteric Artery, Inferior ; Mesenteric Artery, Superior ; Mortality ; Prognosis ; Retrospective Studies

Incorporation of laparoscopic techniques into the gastrointestinal surgeon's armamentarium has led to a renewal of interest in the anatomy of mesenteric arteries because hemorrhagic complications can be a major cause of conversion and/or morbidity during laparoscopic intestinal surgery. BACKGROUND: Since a colonic resection with laparoscopic techniques has become a common procedure, the limited exposure currently provided in laparoscopic intestinal resection demands a precise knowledge of mesenteric vascular anatomy to avoid such complications and to expedite the procedure. Historically, It was thought that the arterial supply to the right colon consisted of three arterial branches (middle colic artery, right colic artery, ileocolic artery) arising independently from the superior mesenteric artery (SMA). However, on recent reports and clinical observations, two colonic arteries only arising independently from the SMA are more common than three colonic arteries. METHODS: We reviewed 40 cases of angiography which focused on the SMA and it's branches. RESULTS: We found the ileocolic artery in 39 of 40 cases, the middle colic artery in 39 of 40, and the right colic artery in 19 of 40. Based on the existence of the right colic artery in our review, about half (47.5%) of the cases had a right colic artery directly arising from this SMA. CONCLUSION: This knowledge may help lower the risk of vascular complications during laparoscopic intestinal surgery.
Angiography* ; Arteries* ; Colic ; Colon* ; Mesenteric Arteries ; Mesenteric Artery, Superior*

No abstract available.
Atrial Fibrillation ; Mesenteric Arteries ; Mesenteric Artery, Superior ; Stroke

Aneurysm of the superior mesenteric artery is rare, accounting for about 8% of visceral arterial aneurysms ;60% of all such the aneurysms of the superior mesenteric artery. We report a case of mycotic aneurysm of thesuperior mesenteric artery whcih on US, CT and angiography, showed typical findings.
Aneurysm ; Aneurysm, Infected* ; Angiography ; Mesenteric Arteries ; Mesenteric Artery, Superior*

Coronary arterial involvement in Takayasu arteritis (TA) is not uncommon. Herein, we describe a case of TA with celiac trunk and superior mesenteric artery occlusion combined with coronary artery disease. Bilateral huge internal thoracic arteries (ITAs) and the inferior mesenteric artery provided the major visceral collateral circulation. After percutaneous intervention to the right coronary artery, off-pump coronary artery bypass grafting for the left coronary territory was done using a right ITA graft and its large side branch because of its relatively minor contribution to the visceral collateral circulation.
Collateral Circulation* ; Coronary Artery Bypass ; Coronary Artery Bypass, Off-Pump ; Coronary Artery Disease ; Coronary Vessels* ; Mammary Arteries* ; Mesenteric Artery, Inferior ; Mesenteric Artery, Superior ; Takayasu Arteritis* ; Transplants