@article{oai:shiga-med.repo.nii.ac.jp:00004118,
 author = {茶谷, 祥平 and 関, 晃吉 and 園田, 明永 and 村上, 陽子 and 友澤, 裕樹 and 藤本, 剛英 and 安藤, 朗 and 渡邉, 嘉之 and CHATANI, Shohei and SEKI, Kokichi and SONODA, Akinaga and MURAKAMI, Yoko and TOMOZAWA, Yuki and FUJIMOTO, Takehide and ANDOH, Akira and WATANABE, Yoshiyuki},
 issue = {4},
 journal = {Radiology Case Reports},
 month = {Apr},
 note = {pdf, Bleeding is less common from anorectal varices than from esophageal varices, but it is potentially life-threatening. Here, we present a case of a woman in her 70s with critical hemorrhage from anorectal varices. The endoscopic approach could not be performed due to the huge variceal formation and the transhepatic approach was also unsuitable due to the presence of portal vein thrombosis and ascites. A direct puncture to the right superior rectal vein was performed through the greater sciatic foramen under computed tomography fluoroscopic guidance. Using a steerable microcatheter, superior rectal veins were bilaterally embolized with a mixture of n-butyl cyanoacrylate and ethiodized oil, and microcoils. Endoscopy and contrast-enhanced computed tomography performed after the procedure confirmed a marked shrinkage of anorectal varices. When endoscopic or any other approaches are difficult, this technique can be a useful alternative therapeutic option., Journal Article},
 pages = {1104--1109},
 title = {Bleeding anorectal varices treated by a direct puncture approach through the greater sciatic foramen : The utility of a steerable microcatheter for reverse catheterization},
 volume = {17},
 year = {2022}
}