• Okan Turk, Nuriye G Ozdemir, Ibrahim B Atci, Tahsin Saygi, Hakan Yilmaz, and Veysel Antar.
• Department of Neurosurgery, Usak University Faculty of Medicine Education and Research, Usak, Turkey.
• World Neurosurg. 2018 Mar 1; 111: 264-268.

BackgroundGadolinium-based contrast agents are relatively safe for use in magnetic resonance imaging (MRI) of nervous system pathology. Few reports have been reported regarding the severe adverse effects. These are mostly mild anaphylactoid reactions, especially in the vulnerable group.Case DescriptionWe report a case of an adverse effect of gadoteric acid concerning the misuse as intraventricular administration. To our knowledge, this is the first report related to intraventricular spillage and its results. A 38-year-old male patient with a complaint of headache and drowsiness was admitted to the hospital, after which cranial MRI revealed that he had a posterior fossa mass. An operation was performed with the catheterization of the lateral ventricule as a safety device at the beginning, and later mass was evacuated gross totally. Frozen pathology result showed the tumor was medulloblastoma. On the first postoperative day a control contrasted cranial and total spinal MRI was planned. He was observed to have a tonic-clonic generalized seizure soon after returning to the ward. After giving the acute management with antiepileptics, the patient was stabilized and it was recognized that the patient was administered contrast media by the intraventricular route. Symptomatic treatment and cerebrospinal fluid irrigation by external ventricular drainage helped the patient's improvement. After a week his symptoms were relieved and he had no complications during outpatient controls.ConclusionsIn addition to formal basic supportive treatment, cerebrospinal fluid irrigation of the toxic contrast material is the best management method in case of such an unexpected misadministration of gadoteric acid.Copyright © 2017 Elsevier Inc. All rights reserved.

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