Clinically mild encephalitis/encephalopathy with a reversible splenial lesion

H. Tada, J. I. Takanashi, A. J. Barkovich, H. Oba, M. Maeda, Hirokazu Tsukahara, M. Suzuki, T. Yamamoto, T. Shimono, T. Ichiyama, T. Taoka, O. Sohma, H. Yoshikawa, Y. Kohno

Research output: Contribution to journalArticle

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Abstract

Objective: To clarify whether patients with clinical diagnoses of encephalitis/encephalopathy with a reversible lesion in the splenium of the corpus callosum (SCC) share common clinical features. Methods: Possible encephalitis/ encephalopathy patients; with a reversible isolated SCC lesion on MRI were collected retrospectively. Their clinical, laboratory, and radiologic data were reviewed. Results: Fifteen encephalitis/encephalopathy patients with a reversible isolated SCC lesion were identified among 22 patients referred for this study. All 15 patients had relatively mild clinical courses. Twelve of the 15 patients had disorders of consciousness. Eight patients had seizures, and three of them received antiepileptic drugs. All 15 patients clinically recovered completely within 1 month (8 patients within a week) after the onset of neurologic symptoms. The SCC lesion was ovoid in six patients; it extended irregularly from the center to the lateral portion of SCC in the other eight patients. Homogeneously reduced diffusion was seen in all seven patients who underwent diffusion-weighted imaging. There was no enhancement in the five patients so examined. The SCC lesion had completely disappeared in all patients at follow-up MRI exams between 3 days and 2 months after the initial MRI (within 1 week in eight patients). Conclusion: The clinical features among the affected patients were nearly identical, consisting of relatively mild CNS manifestations and complete recovery within 1 month.

Original languageEnglish
Pages (from-to)1854-1858
Number of pages5
JournalNeurology
Volume63
Issue number10
Publication statusPublished - Nov 23 2004
Externally publishedYes

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Brain Diseases
Encephalitis
Corpus Callosum
Consciousness Disorders
Neurologic Manifestations
Anticonvulsants

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Tada, H., Takanashi, J. I., Barkovich, A. J., Oba, H., Maeda, M., Tsukahara, H., ... Kohno, Y. (2004). Clinically mild encephalitis/encephalopathy with a reversible splenial lesion. Neurology, 63(10), 1854-1858.

Clinically mild encephalitis/encephalopathy with a reversible splenial lesion. / Tada, H.; Takanashi, J. I.; Barkovich, A. J.; Oba, H.; Maeda, M.; Tsukahara, Hirokazu; Suzuki, M.; Yamamoto, T.; Shimono, T.; Ichiyama, T.; Taoka, T.; Sohma, O.; Yoshikawa, H.; Kohno, Y.

In: Neurology, Vol. 63, No. 10, 23.11.2004, p. 1854-1858.

Research output: Contribution to journalArticle

Tada, H, Takanashi, JI, Barkovich, AJ, Oba, H, Maeda, M, Tsukahara, H, Suzuki, M, Yamamoto, T, Shimono, T, Ichiyama, T, Taoka, T, Sohma, O, Yoshikawa, H & Kohno, Y 2004, 'Clinically mild encephalitis/encephalopathy with a reversible splenial lesion', Neurology, vol. 63, no. 10, pp. 1854-1858.
Tada H, Takanashi JI, Barkovich AJ, Oba H, Maeda M, Tsukahara H et al. Clinically mild encephalitis/encephalopathy with a reversible splenial lesion. Neurology. 2004 Nov 23;63(10):1854-1858.
Tada, H. ; Takanashi, J. I. ; Barkovich, A. J. ; Oba, H. ; Maeda, M. ; Tsukahara, Hirokazu ; Suzuki, M. ; Yamamoto, T. ; Shimono, T. ; Ichiyama, T. ; Taoka, T. ; Sohma, O. ; Yoshikawa, H. ; Kohno, Y. / Clinically mild encephalitis/encephalopathy with a reversible splenial lesion. In: Neurology. 2004 ; Vol. 63, No. 10. pp. 1854-1858.
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AU - Takanashi, J. I.

AU - Barkovich, A. J.

AU - Oba, H.

AU - Maeda, M.

AU - Tsukahara, Hirokazu

AU - Suzuki, M.

AU - Yamamoto, T.

AU - Shimono, T.

AU - Ichiyama, T.

AU - Taoka, T.

AU - Sohma, O.

AU - Yoshikawa, H.

AU - Kohno, Y.

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