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131.
目的:探讨肾血管肌脂瘤的治疗方法。方法:45例患者中23例未作特殊治疗;6例超选择性动脉栓塞治疗、7例行肿瘤剜除术或肾部分切除术、9例行全肾切除术。结果:随访21例,平均随访时间3.6a。未作特殊治疗的病例中未发现肿瘤破裂出血,2便肿瘤体积增大但我症状;超选择性动脉栓塞病例无症状复发、无破裂出血、肾功能稳定。手术患者均保持肾功能稳定,无肿瘤复发。结论:对本病采取保守性治疗原则。超选择肾动脉栓塞是简 相似文献
132.
Flexible tantalum stents: Effects in the stenotic canine urethra 总被引:2,自引:0,他引:2
Petar Bosnjaković Miodrag Ilić Tomislav Ivković Cedo Kutlesić Dragan Mihailović Vojin Savić Branislav Petkovic 《Cardiovascular and interventional radiology》1994,17(5):280-284
Purpose Evaluate the effects of flexible tantalum stents (Strecker) implanted into stenotic canine urethras.Methods Eight conditioned, adult, German shepherd dogs, weighing 30–40 kg, were used. Strictures were created surgically in the bulbar urethra just proximal to the os penis. Two months postsurgery, strictures were documented radiographically and then balloon dilated. Following dilatation, a single Strecker stent was placed across the stricture. Stents were 7 mm in expanded diameter and either 2 or 4 cm in length. Retrograde urethrography was performed immediately after stent placement and then biweekly for up to 12 months. Two dogs were sacrificed at 2, 4, 6, and 12 months post-stenting, and necropsy was performed. The urethra was excised, fixed, and examined by scanning electron and light microscopy.Results Clinical success was achieved without complications in all animals. Hyperplasia of the urothelium was noted 4–6 weeks after stent placement and was most pronounced at 4–6 months. Mucosal folds were found between the stent struts. Restenosis occurred at the distal end of the stent in one dog. Histological alterations were noted in the deeper layers of the urethral wall.Conclusion Strecker stents were well tolerated in all animals and seem useful for the treatment of urethral strictures.Presented at CIRSE Annual Meeting and Postgraduate Course, Budapest, June 20–24, 1993 相似文献
133.
R. Deruty I. Pelissou-Guyotat C. Mottolese D. Amat Y. Bascoulergue 《Acta neurochirurgica》1994,131(3-4):169-175
Summary The prognostic value of the Spetzler's grading system is studied in a series of 52 AVMs treated by a combined management, using one or several of the 3 available techniques: surgical resection, endovascular embolization, radiosurgery.The symptoms at the time of treatment were haemorrhage 50%, seizures 31%, headache and deficit 19%. Three grade groups were considered: I and II (31%), III (33%), IV and V (36%). Overall, AVMs were managed as follows: resection alone 25%, embolization plus resection 23%, embolization alone 23%, radiosurgery with various combinations 29%. According to the grade groups, the most frequently used technique was resection alone for grade I–II AVMs (44%), radiosurgery for grade III AVMs (41%) and embolization alone for grade IV–V AVMs (42%).The clinical outcome was evaluated in terms of deterioration due to treatment. The best results were obtained in grade I–II AVMs (81% with no deterioration) then in grade III AVMs (65%) and in grade IV–V (58%). However, when we consider the outcome in terms of favourable results (no or only minor deterioration) we obtained a similar outcome for grade I–II and grade III AVMs (94% each), and only 79% for grade IV–V malformations. The angiographic outcome showed a better eradication rate in grade III AVMs (88% complete eradication), than in grade I–II AVMs (75%) and in grade IV–V (47%).Our conclusion is that the Spetzler's grading system in this series was well correlated with both the clinical and the angiographic outcome. However, we found no real difference between grade I–II and grade III AVMs. So, in terms of prognostic value, the grade I, II, and III AVMs could be considered together as low-grade malformations, with a better prognosis than the high-grade malformations (grade IV and V). 相似文献
134.
135.
白及微球的研制及其肝动脉栓塞实验研究 总被引:3,自引:0,他引:3
用乳化-冷凝技术首次制备出白及微球,并通过正交实验,确定了制备特定粒径微球的最佳工艺条件。对微球的外观、粒径与分布、溶胀度及血液相容性等进行了研究。微球平均粒径为54.36μm,粒径范围50~90μm,占总数的78.37%;微球在pH=7.4的缓冲液中有一定的溶胀性;血液相溶性良好。实验小猪微球栓塞后的肝动脉造影表明白及微球可致肝右动脉一级、二级分支完全栓塞;病理检查表明梗死区可见肝组织呈肝硬化改变,大量的假小叶形成。微球栓塞后,GPT有一过性升高,3周后恢复正常。实验结果表明,以白及胶为材料制备的微球将为癌症的治疗提供一种新型的栓塞治疗剂 相似文献
136.
超声引导经皮穿刺冷冻治疗肝癌的实验和临床研究 总被引:5,自引:0,他引:5
目的 探讨经皮穿刺冷冻治疗原发性肝癌的应用价值。方法 ①家猪12只,腹腔镜下显露肝脏,rocar针穿刺腹壁,经一非金属鞘将冷冻头插入肝右叶冷冻;②11例原发性肝癌,超 引导穿刺扩张皮肤直至肝内肿瘤表面,保留一非金属鞘,LCS-2000冷冻机5mm冻冷头经鞘管插至肿瘤中心冷冻。结果 ①实验动手术后无腹腔内出血,冷冻穿刺部位无严重冻伤;②11例病人冷冻后恢复均顺利,其中5例肿瘤缩小≥50%,1例肿瘤完 相似文献
137.
应用自动血细胞计数仪检测ITP患者脾动脉栓塞前后不同时期血小板的变化。结果栓塞后患者血小板计数(PLT)和平均血小板体积(MPV)的变化呈负相关,但PLT恢复正常后,MPV仍高于正常。提示脾动脉栓塞后血小板计数增高的机理不同于激素治疗。 相似文献
138.
Schneider JP Dietrich J Lieberenz S Schmidt F Sorge O Trantakis C Seifert V Kellermann S Schober R Franke P 《European radiology》1999,9(2):230-236
The purpose of our study was to evaluate the feasibility and accuracy of brain biopsies performed within a vertically opened
MR system. We worked with the interventional 0.5-T MR “SIGNA SP” (General Electric Medical Systems, Milwaukee, Wis.) with
an integrated tracking device “Flashpoint Position Encoder” (Image Guided Technologies, USA). As a holding device for this
instrument we constructed a special frame. The whole system allows an exact adjustment of an optimum biopsy direction and
guidance of the biopsy in a non-stereotactic, interactive mode in near real-time. As biopsy tools we used MR-compatible aspiration
and specially made side-cut needles (Daum, Germany; E-Z-EM, USA). We performed a prospective diagnostic brain biopsy study
in 18 patients. Guidance of the needle was carried out using gradient-echo single-slice technique. The sample was taken after
controlling the exact position of the needle tip on spin-echo images. In 12 cases an exact neuropathological diagnosis was
possible. In 6 cases of negative biopsy (4 aspiration biopsies) the samples were not representative. Our results demonstrate
the feasibility of interactive MR-guided minimally invasive brain biopsies in an open MR system. The best results were achieved
using cut needles for biopsies of contrast-enhancing lesions visible on T1-weighted gradient-echo guidance sequence.
Received: 2 February 1998; Revision received: 13 July 1998; Accepted: 2 September 1998 相似文献
139.
140.
Recent advances in the understanding of erectile physiology have improved the prompt diagnosis and treatment of priapism. During initial assessment, the physician must distinguish between veno-occlusive low flow (ischemic) and arterial high flow (nonischemic) in order to choose the correct treatment option for each type of priapism. Patient history, physical examination, penile haemodynamics and corporeal metabolic blood quality assist the distinction between static and dynamic priapism. Normally, priapism is effectively treated with intracavernous vasoconstrictive agents or surgical shunting. However, when these two methods fail, subsequent treatment procedures are a matter for debate. Alternative options, such as intracavernous injection of methylene blue or selective penile arterial embolization, for the management of high and low flow priapism are described and a survey of current treatment modalities is presented. 相似文献