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Partial rhombencephalosynapsis and Chiari type II malformation in a child: a true association supported by DTI tractography

Publié dansCerebellum, vol. 11, no. 1, p. 227-232
Collection
  • Open Access - Licence nationale Springer
Date de publication2012
Résumé

Partial rhombencephalosynapsis (PRECS) has been recently reported in association with Chiari II (CII). However, its existence as a true malformation is challenged due to the anatomical changes potentially induced by CII. The aim of this report was to investigate the contribution of midbrain/hindbrain tractography in this setting. A 13-year-old boy with a known CII malformation and operated myelomeningocele was referred for brain imaging after a first complex partial seizure. In addition to the classical features of CII, MRI showed partially fused cerebellar hemispheres and multiple supratentorial abnormalities. Diffusion tensor imaging (DTI) color map and tractography showed absent transverse fibers on the midsection of the cerebellum, scarce fibers of the middle cerebellar peduncle (MCP), absence of the middle pontine crossing tract, and fibers running vertically in the medial part of the cerebellum. Vertical mediocerebellar fibers are a feature of classical RECS and the paucity or absence of MCP fibers is mainly described in CII. In our patient, DTI and FT therefore demonstrated structural characteristics of both RECS and CII confirming their potential coexistence and suggesting possible shared embryological pathway.

Mots-clés
  • Adolescent
  • Arnold-Chiari Malformation/complications/diagnosis/pathology
  • Diffusion Tensor Imaging/methods
  • Epilepsy, Complex Partial/diagnosis/etiology/pathology
  • Humans
  • Male
  • Nervous System Malformations/diagnosis/etiology/pathology
  • Rhombencephalon/abnormalities/pathology
Citation (format ISO)
MERLINI, Laura et al. Partial rhombencephalosynapsis and Chiari type II malformation in a child: a true association supported by DTI tractography. In: Cerebellum, 2012, vol. 11, n° 1, p. 227–232. doi: 10.1007/s12311-011-0300-3
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Article (Published version)
accessLevelPublic
Identifiants
ISSN du journal1473-4222
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Informations techniques

Création16/10/2013 14:07:00
Première validation16/10/2013 14:07:00
Heure de mise à jour14/03/2023 20:36:13
Changement de statut14/03/2023 20:36:13
Dernière indexation16/01/2024 08:07:16
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