Young man with unilateral neck swelling: What could it be??
The present case has been published in the journal Annals of Emergency Medicine.

A 36-year-old male patient presented to the emergency department with a newly expanding mass in his neck. He had recently undergone a posterior cranial fossa resection of multiple schwannomas. He did not complain of neck pain, fever, headache, or new neurologic deficits. He was alert and oriented, with normal vital signs.

The right-sided lesion extended from the base of the skull down the length of his neck and was fluctuant. There was no overlying warmth or erythema and no discharge was noted. All laboratory markers, including erythrocyte sedimentation rate and C-reactive protein, were normal. Bedside ultrasonography and CT were performed.

He was diagnosed with pseudomeningocele, an abnormal extradural collection of cerebrospinal fluid that is an uncommon complication of neurosurgical intervention. He was assessed by neurosurgery, and a decision was made to treat conservatively. The patient was discharged home with outpatient follow-up.

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