Using absolute ethanol, 40 embolizations were performed in 10 patients: 14 transcatheter embolizations and 26 direct percutaneous puncture embolizations. Direct percutaneous puncture techniques were developed to circumvent catheterization obstacles secondary to tortuous vessels and previous surgical arterial ligations and to attack postcapillary hemangiomatous lesions
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Yakes et al. (1989) studied this question.