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  • Title: Value of embolisation of collateral veins from gastric varices before balloon-occluded retrograde transvenous obliteration.
    Author: Yamagami T, Tanaka O, Yoshimatsu R, Miura H, Nishimura T.
    Journal: J Med Imaging Radiat Oncol; 2011 Feb; 55(1):26-32. PubMed ID: 21382186.
    Abstract:
    OBJECTIVE: The purpose of our investigation was to determine the safety and usefulness of embolisation procedures in balloon occluded retrograde transvenous obliteration (BRTO) as treatment of gastric varices after portal hypertension. MATERIALS AND METHODS: Between June 2004 and August 2009, 40 patients underwent BRTO for gastric varices that occurred after portal hypertension in our institution. When large collateral vessels of gastric varices had developed as drainage veins other than the gastro-renal shunt, these collateral vessels were embolised prior to BRTO. RESULTS: Embolisation was performed for 18 collateral vessels in 16 cases before BRTO. Embolised collateral vessels were the left inferior phrenic vein (n = 14), intercostal vein (n = 3), and ascending lumbar vein communicating with the gastro-renal shunt (n = 1). Mean number of micro-coils used was 5.7 in left inferior phrenic veins, 4.7 in intercostal veins and 4 in the ascending lumbar vein. In 36 (90%) patients, contrast-enhanced abdominal CT after BRTO showed that the gastric varices were well obliterated. The rate of occurrence of cases in which the remnant of the enhanced area in the gastric varices was seen even after BRTO was statistically higher in cases requiring embolisation of collateral vessels than in those who did not (4/16 versus 0/24, P = 0.0199 according to Fisher's exact probability test). Recurrence of gastric varices was determined by endoscopy in 1 (2.5%) case necessitating embolisation of collateral vessels. There were no serious complications. CONCLUSION: Embolisation of collateral vessels before BRTO is a safe and useful procedure. However, especially in cases having collaterals sufficiently large to require embolisation, careful follow-up for recurrence of gastric varices is necessary.
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