Footnotes

• Contributors The case was managed in the emergency department by DR. Subsequent neurosurgical intervention was performed by CM. DR indicated the importance of this case in highlighting pertinent issues central to this case. BMR was responsible for writing the case for submission to the journal as well as performing a literature search to identify similar cases. She is the guarantor for the submission. TS was involved in image selection for the submission.

• Competing interests None.

• Patient consent Obtained.

• Provenance and peer review Not commissioned; internally peer reviewed.