Perioperative Stroke in Parapharyngeal Space Schwannoma: an Unusual, Dreaded Complication

Background: Post-styloid parapharyngeal space tumours (PPS) have a notorious course owing to their anatomy and proximity to neurovascular bundles. Nerve injuries are usual outcomes in schwannomas. Our case is the first documented complication of contralateral hemiplegia occurring in the postoperative period in a benign PPS tumour.

Case Report: A 24-year-old presented with a swelling on the left lateral aspect of the neck, diagnosed as a PPS schwannoma. He underwent transcervical excision with mandibulotomy with extracapsular dissection of the tumour. Contralateral hemiplegia, as a dreaded complication, was encountered. He was managed conservatively according to ASPECTS stroke guidelines by the critical care team. On a regular follow-up, he noticed an improvement in the lower limb with subsequent upper limb power.

Conclusion: Perioperative stroke is a dreaded complication involving PPS in large benign tumours. To prevent unforeseen circumstances, necessary preoperative patient counselling and immense intraoperative care should be taken while dissecting the major vessels.