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Transient splenium lesions in presurgical epilepsy patients: incidence and pathogenesis

  • Diagnostic Neuroradiology
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Abstract

Introduction

Transient splenium corporis callosi (SCC) lesions are related to rapid reduction of antiepileptic drugs (AEDs). The range of substances with predilection for SCC changes, their pathophysiology and their occurrence are still unknown.

Methods

In a prospective 2-year study an epilepsy-dedicated MRI protocol supplemented by DWI and ADC maps was performed after AED withdrawal for diagnostic seizure provocation in all patients with pharmacoresistant seizures locally admitted to the Department of Epileptology.

Results

Of 891 presurgical epilepsy patients, 6 (0.7%) had SCC lesions with cytotoxic edema on DWI. Carbamazepine combined with other AEDs was administered in five of those patients. In the study period we observed identical lesions in a schizophrenic patient treated with olanzapine and citalopram, in a patient with oropharyngeal carcinoma treated with alkylating agents, and in a hypernatremic patient following neurohypophyseal granular cell tumor surgery.

Conclusion

Transient SCC lesions are related to rapid AED reduction but may occur in similar conditions with fluid balance alterations. We contribute further clinical data in this field to better classify the pharmaceuticals that are prone to the described cerebral cytotoxic side effects in the SCC and to clarify their incidence among presurgical epilepsy patients.

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Conflict of interest statement

We declare that we have no conflict of interest.

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Authors and Affiliations

  1. Department of Radiology/Neuroradiology, University of Bonn Medical Center, Sigmund Freud Str. 25, 53105, Bonn, Germany

    M. Nelles, M. von Falkenhausen & H. Urbach

  2. Department of Epileptology, University of Bonn Medical Center, Bonn, Germany

    C. G. Bien & M. Kurthen

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  1. M. Nelles
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  2. C. G. Bien
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  3. M. Kurthen
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  4. M. von Falkenhausen
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  5. H. Urbach
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Correspondence to M. Nelles.

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Nelles, M., Bien, C.G., Kurthen, M. et al. Transient splenium lesions in presurgical epilepsy patients: incidence and pathogenesis. Neuroradiology 48, 443–448 (2006). https://doi.org/10.1007/s00234-006-0080-5

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  • DOI: https://doi.org/10.1007/s00234-006-0080-5

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