Harlequin syndrome and Horner syndrome after neck schwannoma excision in a pediatric patient: A case report

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Harlequin syndrome is an extremely rare benign condition characterized by unilateral facial flushing and sweating.

Patient concern:

An 11-year-old boy presented with complaint of a right neck mass of 1-month duration.


The preoperative diagnosis was neurogenic tumor of vagus nerve or sympathetic nerve.


We performed right neck mass removal under general anesthesia.


We report a case of harlequin syndrome associated with Horner syndrome in an 11-year boy who underwent excision of right neck schwannoma.


Clinicians should consider the point that harlequin syndrome could occur as a first sign of more serious conditions.

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