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  • Title: Endovascular treatment of splenic artery aneurysms.
    Author: Laganà D, Carrafiello G, Mangini M, Fontana F, Dizonno M, Castelli P, Fugazzola C.
    Journal: Radiol Med; 2005; 110(1-2):77-87. PubMed ID: 16163142.
    Abstract:
    PURPOSE: To assess the feasibility and effectiveness of endovascular treatment of splenic artery aneurysms (SAAs). MATERIALS AND METHODS: Between May 2000 and June 2003 we treated 11 true SAAs in 9 patients (7 females and 2 males; mean age 58 years), 8 saccular and 3 fusiform, 4 located at the middle tract of the splenic artery, 5 at the distal tract and 2 intra-parenchymal. The diagnosis was performed with colour-Doppler ultrasound and/or CT-angiography; 7 patients were symptomless, 1 had left hypochondriac pain, and 1 had acute abdomen caused by a ruptured SAA. Four SAAs were treated by microcoil embolization of the aneurysmal sac with preservation of splenic artery patency; in 2 cases this was associated with transcatheter injection of N-butyl-2-cyanoacrylate. Four cases were treated by endovascular ligature, with sectoral spleen ischaemia. One ruptured SAA received emergency treatment with splenic artery cyanoacrylate embolization. Two intra-parenchymal SAAs were excluded, one by cyanoacrylate embolization of the afferent artery and the other by transcatheter thrombin injection in the aneurysmal sac. RESULTS: Technical success was observed in all cases (in 10/11 at the end of the procedure; in 1/11 at CT performed 3 days after the procedure). The follow-up (mean 18 months; range 6-36) was performed by colour-Doppler ultrasound and/or CT-angiography 3, 6 and 12 months after the procedure and subsequently once a year; the complete exclusion of the aneurysms was confirmed in 11/11 cases. The complications were: 4 cases of mild left pleuritis; fever and left hypochondriac pain 1 day after the procedure (in the same 4 patients and in one other case); 5 cases of sectoral spleen ischaemia and 1 case of diffuse spleen infarction with partial revascularization by collateral vessels. No alteration of the levels of pancreatic enzymes was found; a transitory increase in platelet count occurred only in the patient with diffuse spleen infarction. CONCLUSIONS: Using different techniques, endovascular treatment is feasible in nearly all SAAs. It ensures good immediate and long term results, and no doubt presents some advantages in comparison to surgical treatment, as it is less invasive and allows the preservation of splenic function.
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