Kovilapu Uday Bhanu, Dudhal Rahul, Maheshwari Saurabh, Dhagat Peeyush, Mishra Umesh K
Department of Radiodiagnosis, Armed Forces Medical College, Pune, India.
SA J Radiol. 2024 Apr 30;28(1):2841. doi: 10.4102/sajr.v28i1.2841. eCollection 2024.
Vein of Galen aneurysmal malformation (VGAM) is a rare congenital malformation characterised by arteriovenous fistulas between primitive choroidal arteries and the median prosencephalic vein, the embryonic precursor to the vein of Galen. Endovascular techniques have changed the management of these patients with improved prognosis. An eight-month-old with VGAM managed by endovascular embolisation using ethylene vinyl alcohol copolymer (EVOH) developed a chemical abscess - a rare complication. It was managed conservatively and showed promising clinical outcome.
Chemical abscesses following EVOH embolisation are scarce - with imaging differentials, which include brain abscess and onyx granuloma. Knowledge and successful identification of this entity are essential as its management as prognoses differ. Chemical abscess is managed conservatively and has a good prognosis.
大脑大静脉动脉瘤样畸形（VGAM）是一种罕见的先天性畸形，其特征为原始脉络膜动脉与大脑前正中静脉（大脑大静脉的胚胎前体）之间存在动静脉瘘。血管内技术改变了这些患者的治疗方式，预后得到改善。一名8个月大的VGAM患儿采用乙烯-乙烯醇共聚物（EVOH）进行血管内栓塞治疗后发生了化学性脓肿，这是一种罕见的并发症。通过保守治疗，取得了良好的临床效果。
EVOH栓塞后发生化学性脓肿的情况很少见，其影像学鉴别诊断包括脑脓肿和奥尼克斯肉芽肿。了解并成功识别这一实体至关重要，因为其治疗方法和预后有所不同。化学性脓肿采用保守治疗，预后良好。
