Embolização intra-arterial pré-operatória de tumor do corpo carotídeo

Abstract

The authors report a case of carotid body tumor (paraganglioma) in a 74-year-old male patient, submitted to intraarterial embolization with spherical core/shield polyvinyl acetate and polyvinyl alcohol (PVAc + PVA) microparticles prior to surgical excision. Angiography has demonstrated a highly vascularized mass in the left carotid bifurcation, and preoperative embolization was used in order to decrease vascularity, reduce blood loss and improve safety of surgical treatment. Microscopic study confirmed presence of thrombosis and tissue ischemia.

Suspension Copolymerization of Vinyl Acetate and Methyl Methacrylate in the Presence of Amoxicillin

“…An ideal embolic agent should provide a large number of features;23 however, biocompatibility and non‐carcinogenicity constitute basic requirements for any type of material used in biomedical applications. Although a relatively large number of materials have already been used as embolic agents,18, 19, 24–27 PVA‐based particles are certainly the most frequently used embolic agents, because of their characteristic biocompatibility and performance 19, 28–30. However, commercial PVA grades present some undesirable characteristics (e.g., irregular morphology) that make these commercial PVA grades unsuited for use as embolic agents 21…”