微球栓塞与碘油栓塞的比较

正目前,TACE是不可切除肝细胞癌的一线治疗方案。但术中栓塞剂的选择一直是业界关注的焦点。有学者认为,碘油+明胶海绵/PVA颗粒(cTACE)已经应用多年,价格较便宜,栓塞效果较好,可继续使用;另有学者认为,随着科技的进步和栓塞材料的发展,TACE已经进入微球栓塞(microspheres TACE,mTACE)时代,新型的栓塞微球必将     

部分性脾栓塞术后栓塞百分率的计算方法探讨

目的寻找一种客观准确地计算脾脏栓塞百分率的方法。方法分别用部分容积分析(PVA)法、临界值法计算40名患者的各层残脾组织百分率和总的栓塞百分率,并对结果进行比较。结果PVA法和临界值法计算出的各层残脾组织百分率在脾脏的两端差异有显著意义(P<0.01);在脾脏中间大部分层面,两者的计算结果无显著性差异(P>0.05);40例患者全脾脏栓塞百分率差异也无显著性意义(P>0.05)。结论两种方法均能较准确地计算出脾脏栓塞百分率,临界值法的稳定性更好。     

Passage of embolization coil through urinary collecting system one year after embolization

Vascular injury is an uncommon, but serious, complication of percutaneous nephrolithotomy. Hyperselective angioembolization is an effective means of managing this complication with few reported adverse sequelae. We report a case in which an embolization coil placed after renal hemorrhage subsequently eroded into the collecting system more than 1 year postoperatively and was passed through the patient's urinary tract.     

胰管出血——介入钢圈栓塞治疗

<正>胰管出血或其他原因出血致血液进入胰管是罕见的上消化道出血,仅占上消化道出血的1/1 500[1]。常见病因有急、慢性胰腺炎、假性囊肿、假性动脉瘤和胰腺肿瘤等。假性动脉瘤破裂出血引起胰管出血的治疗方式主要有经导管动脉栓塞(therapeutic arterial embolization,TAE)治疗和外科手术。本文分析3例假性动脉瘤破裂出血引起胰管出血的患者经导管超选择植入钢圈栓塞治疗的资料,以评价其疗效。     

Lower extremity atheromatous embolization

Eleven patients with lower extremity atheromatous microembolization are described. The diagnostic feature of sudden, often repetitive, episodes of focal ischemia, patent major arteries of the legs, and arteriographic demonstration of nonocclusive atheromas of the proximal arterial tree are characteristic. Successful removal of the causative lesion in these patients has prevented further ischemic episodes.     

Pancreaticoduodenal artery pseudoaneurysm embolization

We report a case of successful transcatheter arterial embolization of a pancreaticoduodenal artery pseudoaneurysm (PSA) caused by erosion of the pancreatic pseudocyst content near pancreaticoduodenal arteries. A 55-year-old man was admitted to a local hospital for investigation of severe, stabbing epigastric pain confined to the upper abdomen. He had a history of previous alcohol abuse, chronic pancreatitis, and a duodenal ulcer. Upper gastrointestinal endoscopy revealed narrowing in the pyloric channel along with an ulcer located at the first and second portions of the duodenum with oozing beneath an adherent cloth and duodenal distortion. Computed tomography additionally revealed an enlarged head of the pancreas with numerous spot calcifications and round cystic formation inside, with a diameter of 30 x 25 mm. Following two surgical procedures for duodenal ulcers, selective angiography revealed a PSA located inside the pancreas head and high-grade stenosis > 90% of the celiac trunk and hepatic artery that rose separately from the aorta. Fiber coil embolization was used to occlude the PSA sac successfully. There was no complication after completion of the last embolic procedure. The patient was doing well after 26 months.     

Aneurysm embolization grade: a predictive tool for aneurysm recurrence after coil embolization

Background

Coil embolization has gained importance in the management of intracranial aneurysms over the past decade. However, the recurrence risk after embolization mandates closer follow-up than surgical clip ligation. Currently, there is no reliable system for predicting aneurysm sac thrombosis. An aneurysm embolization grade (AEG) reported previously by the senior author (EMD) has been proposed as a tool for predicting the durability of aneurysm occlusion based on hemodynamic characteristics. Here, we present our internal validity results.

Methods

AEG and Raymond–Roy Occlusion Classification (RROC) scores were prospectively assigned to all aneurysms coiled from June 2008 to June 2011. The prospectively assigned AEG and RROC scores from the cerebral angiograms were collected for data analysis and validity assessment of the AEG system. 110 consecutive patients who had aneurysm coil embolization were included in this study.

Results

The post-coiling AEG significantly predicted follow-up angiographic filling characteristics. Pairwise comparisons revealed that the follow-up AEG for those initially scored ‘A’ (complete obliteration) was significantly better than the contrast-flow groups. Significant differences were also noted between contrast-stasis and contrast-flow groups. A pairwise comparison between RROC scores demonstrated that only the RROC Type 1 could be used to predict follow-up occlusion durability. Stent placement in wide-neck aneurysms had no effect on initial AEG, RROC, or long-term occlusion durability. Packing density significantly predicted initial AEG and RROC, but had no effect on long-term occlusion.

Conclusions

The AEG system is uniquely based on angiographic filling characteristics of the aneurysm, and this study demonstrated its high predictive value for determining aneurysm sac thrombosis. Assigning an AEG to the aneurysm can guide the neurointerventionalist in discussions with the patient regarding the probability of aneurysm recurrence and potential need for retreatment.     

骶骨肿瘤的术前血管栓塞

目的：评估骶骨肿瘤的术前动脉栓塞的应用价值。方法：7例骶骨肿瘤患者在术前2－4天采用明胶海绵结合弹簧及丝线栓塞。结果：所有病灶均完全切除,术中出血量明显降低,平均随访11个月,未见严重并发症和局部复发。结论：骶骨肿瘤的术前动脉栓塞能有效降低术中出血、减少并发症。