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1.
Clinics ; 76: e2455, 2021. tab, graf
Article in English | LILACS | ID: biblio-1153982

ABSTRACT

OBJECTIVES: This study aimed to determine the prevalence of signs of impending rupture (SIR) in asymptomatic patients with abdominal aortic and iliac artery aneurysms, and to evaluate whether these signs were associated with rupture in asymptomatic patients. METHODS: This was a retrospective study of patients with abdominal aortic and iliac artery aneurysms identified on computed tomography (CT) over a 10-year period in a single center. The CT scans were reviewed by two reviewers, and patients with SIR were assigned to one of three groups: (1) early symptomatic (ES), (2) late symptomatic (LS), and (3) always asymptomatic (AA). The four main SIR described in the literature were investigated: 1) crescent sign, 2) focal wall discontinuity of circumferential calcifications, 3) aortic bulges or blebs, and 4) aortic draping. RESULTS: From a total of 759 aortic and iliac aneurysm reports on 2226 CT scans, we identified 41 patients with at least one SIR, and a prevalence of 4.14% in asymptomatic patients. Focal wall discontinuity of circumferential calcifications was the most common sign, and it was present in 46.3% of these patients (19/41); among these, 26 were repaired (ES: 9, LS: 2, AA: 15). Eleven asymptomatic patients underwent follow-up CT. The aneurysm increased in size in 6 of the 11 (54.5%) patients, and three ruptured (all with discontinuity of calcifications), one of which had no increase in diameter. CONCLUSIONS: The presence of focal wall discontinuity of circumferential calcifications was the most common SIR. There was a prevalence of all signs in less than 5% of asymptomatic patients. In unrepaired patients, the signs could be observed on follow-up CT scans with an increase in aneurysm size, indicating that the presence of SIR alone in the absence of other clinical factors or aneurysm characteristics is an insufficient indication for surgery.


Subject(s)
Humans , Iliac Aneurysm/epidemiology , Iliac Aneurysm/diagnostic imaging , Aortic Aneurysm, Abdominal/epidemiology , Aortic Aneurysm, Abdominal/diagnostic imaging , Tomography, X-Ray Computed , Retrospective Studies , Iliac Artery/diagnostic imaging
4.
J. vasc. bras ; 15(3): 250-253, jul.-set. 2016. tab, graf
Article in English | LILACS | ID: lil-797963

ABSTRACT

Abstract The obturator artery is a branch of the internal iliac artery, although there are reports documenting variations, with origin from neighboring vessels such as the common iliac and external iliac arteries or from any branch of the internal iliac artery. It normally runs anteroinferiorly along the lateral wall of the pelvis to the upper part of the obturator foramen where it exits the pelvis by passing through said foramen. Along its course, the artery is accompanied by the obturator nerve and one obturator vein. It supplies the muscles of the medial compartment of the thigh and anastomoses with branches of the femoral artery on the hip joint. We report a rare arterial variation in a Brazilian cadaver in which the obturator artery arose from the external iliac artery, passing beyond the external iliac vein toward the obturator foramen, and was accompanied by two obturator veins with distinct paths. We also discuss its clinical significance.


Resumo A artéria obturatória é um ramo da artéria ilíaca interna, embora haja grande variabilidade a respeito de sua origem, pois tal vaso pode surgir de diversas artérias vizinhas, como a artéria ilíaca comum e a artéria ilíaca externa, assim de como qualquer ramo da artéria ilíaca interna. Normalmente, a artéria obturatória corre anteroinferiormente pela parede lateral da pelve até a porção superior do forame obturatório, ponto em que sai da pelve. No seu trajeto, a artéria é acompanhada pelo nervo e veia obturatórios. Ela supre os músculos do compartimento medial da coxa e possui anastomoses com ramos da artéria femoral na articulação do quadril e coxa. Este trabalho visa relatar e discutir os aspectos clínicos de uma variação incomum na artéria obturatória, na qual ela se origina da artéria ilíaca externa acompanhada de duas veias obturatórias com trajetos distintos.


Subject(s)
Humans , Male , Dissection/history , Iliac Artery/anatomy & histology , Iliac Artery/diagnostic imaging , Cadaver
5.
Yonsei Medical Journal ; : 1095-1105, 2016.
Article in English | WPRIM | ID: wpr-34056

ABSTRACT

PURPOSE: Appropriate animal models of atherosclerotic plaque are crucial to investigating the pathophysiology of atherosclerosis, as well as for the evaluation of the efficacy and safety of vascular devices. We aimed to develop a novel animal model that would be suitable for the study of advanced atherosclerotic lesions in vivo. MATERIALS AND METHODS: Atherosclerotic plaque was induced in 24 iliac arteries from 12 rabbits by combining a high cholesterol diet, endothelial denudation, and injection into the vessel wall with either saline (n=5), olive oil (n=6), or inflammatory proteins [n=13, high-mobility group protein B1 (HMGB1) n=8 and tumor necrosis factor (TNF)-α n=5] using a Cricket™ Micro-infusion catheter. Optical coherence tomography (OCT) was performed to detect plaque characteristics after 4 weeks, and all tissues were harvested for histological evaluation. RESULTS: Advanced plaque was more frequently observed in the group injected with inflammatory proteins. Macrophage infiltration was present to a higher degree in the HMGB1 and TNF-α groups, compared to the oil or saline group (82.1±5.1% and 94.6±2.2% compared to 49.6±14.0% and 46.5±9.6%, p-value<0.001), using RAM11 antibody staining. On OCT, lipid rich plaques were more frequently detected in the inflammatory protein group [saline group: 2/5 (40%), oil group: 3/5 (50%), HMGB1 group: 6/8 (75%), and TNF-α group: 5/5 (100%)]. CONCLUSION: These data indicate that this rabbit model of atherosclerotic lesion formation via direct injection of pro-inflammatory proteins into the vessel wall is useful for in vivo studies investigating atherosclerosis.


Subject(s)
Animals , Cholesterol, Dietary/administration & dosage , Disease Models, Animal , Endothelium/surgery , HMGB1 Protein/adverse effects , Iliac Artery/diagnostic imaging , Injections, Intra-Arterial , Macrophages , Male , Olive Oil/adverse effects , Plaque, Atherosclerotic/chemically induced , Rabbits , Sodium Chloride/adverse effects , Tomography, Optical Coherence , Tumor Necrosis Factor-alpha/adverse effects
6.
Article in English | WPRIM | ID: wpr-114858

ABSTRACT

Since the introduction of pancreas transplantation more than 40 years ago, surgical techniques and immunosuppressive regiments have improved and both have contributed to increase the number and success rate of this procedure. However, graft survival corresponds to early diagnosis of organ-related complications. Thus, knowledge of the transplantation procedure and postoperative image anatomy are basic requirements for radiologists. In this article, we demonstrate the imaging spectrum of pancreas transplantation with enteric exocrine drainage.


Subject(s)
Adult , Anastomosis, Surgical/methods , Diagnostic Imaging/methods , Drainage/methods , Female , Graft Rejection/pathology , Graft Survival , Humans , Iliac Artery/diagnostic imaging , Immunosuppressive Agents , Kidney Transplantation , Male , Medical Illustration , Mesenteric Artery, Superior/diagnostic imaging , Middle Aged , Pancreas/blood supply , Pancreas Transplantation/adverse effects , Pancreatitis, Graft/etiology , Portal Vein/diagnostic imaging , Postoperative Complications/diagnostic imaging , Postoperative Hemorrhage/etiology , Survival Rate
7.
Article in English | WPRIM | ID: wpr-44590

ABSTRACT

A 46-year-old Vietnamese woman received embolization therapy in order to control postpartum hemorrhage. Angiography revealed an aberrant ovarian artery arising from the right common iliac artery. Superselective catheterization and subsequent embolization of the aberrant ovarian artery and bilateral uterine arteries were performed. Precise knowledge of the anatomic variations of the ovarian artery is important for successful embolization.


Subject(s)
Angiography , Embolization, Therapeutic/methods , Female , Humans , Iliac Artery/diagnostic imaging , Middle Aged , Ovary/blood supply , Postpartum Hemorrhage/diagnostic imaging , Pregnancy , Vascular Malformations/diagnostic imaging
8.
Article in Korean | WPRIM | ID: wpr-110438

ABSTRACT

Arterio-enteric fistula is a very rare cause of massive lower gastrointestinal hemorrhage. We report here on a case of massive hematochezia caused by iliac arterio-colic fistula in a 60-year-old woman who had a recent history of spinal surgery for herniated nucleus pulposus. Abdomen computed tomography showed the extravasation of radiocontrast media from right iliac artery encased by an intraabdominal abscess into the adjacent dilatated colon. Also, diagnostic angiography revealed the active extravasation of radiocontrast media via a fistula between right iliac artery and colon. Although successful endovascular exclusion of the fistula with stent graft and coils was performed, disseminated intravascular coagulation and multi-organ failure were developed.


Subject(s)
Colonic Diseases/complications , Female , Gastrointestinal Hemorrhage/etiology , Humans , Iliac Artery/diagnostic imaging , Intestinal Fistula/complications , Middle Aged , Stents , Tomography, X-Ray Computed , Vascular Fistula/complications
9.
Article in English | WPRIM | ID: wpr-166665

ABSTRACT

Acute embolic occlusion of the common iliac artery is a rare medical emergency that is not only limbthreatening, but also potentially life-threatening. Several treatment options exist for acute limb ischemia, although no treatment is clearly best. We report a case of acute embolic occlusion of the left common iliac artery in a patient with atrial fibrillation who was treated successfully using mechanical thrombectomy following intra-arterial thrombolysis.


Subject(s)
Acute Disease , Arterial Occlusive Diseases/diagnostic imaging , Combined Modality Therapy , Embolism/diagnostic imaging , Female , Fibrinolytic Agents/administration & dosage , Humans , Iliac Artery/diagnostic imaging , Middle Aged , Thrombectomy , Thrombolytic Therapy , Tomography, X-Ray Computed , Treatment Outcome , Urokinase-Type Plasminogen Activator/administration & dosage
10.
Indian Heart J ; 2003 Jan-Feb; 55(1): 71-4
Article in English | IMSEAR | ID: sea-3854

ABSTRACT

We describe a patient who underwent percutaneous coronary intervention combined with bilateral iliac and left renal artery angioplasty during the same sitting. Stenting of the coronary and peripheral arteries was performed employing the "direct stenting" technique. No complications occurred. The patient was discharged 2 days after the intervention and remains asymptomatic, leading a fully active life during 1 year of follow-up. To our knowledge, unstaged coronary stenting combined with direct stenting of the renal and both common iliac arteries has not been reported previously in India.


Subject(s)
Aged , Angioplasty, Balloon , Angioplasty, Balloon, Coronary , Arteriosclerosis/diagnostic imaging , Female , Humans , Iliac Artery/diagnostic imaging , Renal Artery Obstruction/diagnostic imaging , Stents
11.
Jordan Medical Journal. 1991; 25 (2): 197-202
in English | IMEMR | ID: emr-20236

ABSTRACT

Radiographic study of geometric anatomy of the aortic-common iliac bifurcation in 27 Nigerian male cadavers revealed a mean length of 5.1 cm for right common iliac artery and 5.4 cm for left common iliac artery. The take off angle of the left common iliac [mean 27.2 degrees] is more than that of the fight common iliac artery, [mean 25.2 degrees]. The mean of radius of curvature is greater on the left [3.6 cm] than the right [2.9 cm]. There is a positive correlation [r.= + 0.53] between the length of the left common iliac artery and the radius of curvature of the right common iliac artery whereas negative correlation [r = 0.95] between its length and take off angle and negative correlation [r = -0.64] between length of the right common iliac artery and take off angle of the left common iliac artery. Studies of the geometric radiographic anatomy of the aortic-common iliac bifurcation can be utilized to see whether a person is prone to occlusive vascular disease of the lower extremity even if no lesion is present at the time of investigation


Subject(s)
Humans , Male , Arteries/anatomy & histology , Aorta, Abdominal/diagnostic imaging , Iliac Artery/diagnostic imaging
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