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Lateral temporal encephaloceles: case-based review

  • Case-Based Update
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Abstract

Purpose

Lateral temporal encephalocele is an extremely rare clinical condition, with only 18 cases presented in the literature to date. No review articles have examined lateral temporal encephalocele in depth. We therefore reviewed past cases of lateral encephalocele to clarify the clinical characteristics of this extremely rare deformity. We also present a case of lateral encephalocele with arachnoid cyst which has never been reported in past reports.

Methods

We identified 8 reports describing 18 cases of lateral temporal encephalocele. We therefore reviewed 19 cases of lateral temporal encephalocele, including our own experience, and discussed the clinical characteristics of this pathology.

Results

All the cases with lateral temporal encephalocele were detected at birth except for an occult case. The majority occurred at the pterion, and occurrence at the asterion appears much rarer. Due to the preference for the pterion, the ipsilateral orbital wall was also distorted in some cases. Lateral temporal encephalocele seems to have fewer associated malformations: only 3 cases of lateral temporal encephalocele had associated malformations, including our case which was associated with intracranial arachnoid cyst. The only case of lateral temporal encephalocele to have shown hydrocephalus was our own case. Patients with this deformity have relatively good prognoses: only 3 of the 19 cases showed delayed psychomotor development during follow-up.

Conclusions

Provision of adequate treatment is likely to achieve a good prognosis in patients with lateral temporal encephalocele, so we should keep in mind this deformity when encountering pediatric patients with mass lesions on the temporal cranium.

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Authors and Affiliations

  1. Department of Neurosurgery, Nagoya University, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan

    Yuichi Nagata, Kazuhito Takeuchi, Jonsu Chu & Toshihiko Wakabayashi

  2. Department of Neurosurgery, Aichi Children’s Health and Medical Center, Obu City, Aichi, Japan

    Mihoko Kato

Authors
  1. Yuichi Nagata
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  2. Kazuhito Takeuchi
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  3. Mihoko Kato
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  4. Jonsu Chu
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  5. Toshihiko Wakabayashi
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Corresponding author

Correspondence to Yuichi Nagata.

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No sources of financial or material support were used in conducting this study.

This work has not been previously presented or published anywhere in any language.

Informed consent

Informed consent for the publication of our case report was obtained from the guardian of the patient.

Conflict of interest

The authors report no conflict of interest concerning the materials and methods used in this study or the findings specified in this paper.

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Nagata, Y., Takeuchi, K., Kato, M. et al. Lateral temporal encephaloceles: case-based review. Childs Nerv Syst 32, 1025–1031 (2016). https://doi.org/10.1007/s00381-016-3076-4

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  • DOI: https://doi.org/10.1007/s00381-016-3076-4

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