Raymond syndrome

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Raymond syndrome is a posterior circulatory stroke syndrome due to a lesion in the ventral medial mid-pons. It is an extremely rare condition, with only a handful of cases described in the literature.

Clinical presentation

Clinically, 2 subtypes have been reported :

  • classic type
    • abducens nerve (CN VI) - fascicle: ipsilateral lateral gaze paresis
    • corticospinal fibers - undecussated: contralateral hemiparesis
    • corticofacial fibers: facial paresis
  • common type (more frequently reported)
    • abducens nerve (CN VI) - fascicle​: ipsilateral lateral gaze paresis
    • corticospinal fibers - undecussated: contralateral hemiparesis
    • NB: corticofacial fibers are spared in the common type

    • History and etymology

    The syndrome was first described by Fulgence Raymond (1844-1910), a French physician, in 1894 .