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  • Title: Successful microsurgical extraction of a migrated coil in a pediatric patient after failed endovascular closure of a Blalock-Taussig shunt. Case report.
    Author: Heuer GG, Zaghloul KA, Roberts R, Stiefel MF, Storm PB.
    Journal: J Neurosurg; 2007 Feb; 106(2 Suppl):136-8. PubMed ID: 17330541.
    Abstract:
    Coil migration is a rare but potentially serious complication of endovascular procedures. Occasionally coils can be retrieved via endovascular techniques. The authors describe the microsurgical management of a case in which endovascular techniques failed. A 2-year-old girl with pulmonary atresia and a Blalock-Taussig shunt underwent attempted endovascular closure of the shunt with Gianturco steel coils. During deployment, a coil was lost in the aorta and an angiogram showed that it had lodged in the proximal M1 segment of the middle cerebral artery. The coil could not be retrieved by endovascular techniques, and the patient was taken to the operating room to undergo a craniotomy. After the sylvian fissure was split, the coil was visible through the vessel wall. Temporary clips were placed on the proximal M1 and the proximal M2 segments, trapping the coil. A small arteriotomy was performed, the coil was removed, and the arteriotomy was closed. A cerebral angiogram showed excellent perfusion with no dissections. The patient's motor examination demonstrated a mild hemiparesis on the left with no tremulousness. Coil migration can be treated by microsurgical techniques in pediatric patients with a good clinical outcome.
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