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A previously healthy 11-year-old boy presented with a 2-week history of pyrexia of unknown origin, a 5 kg weight loss and a 2×2 cm diffuse soft swelling over the right forehead, which had appeared in the last 5 days. He presented with occasional headaches and two episodes of vomiting. There was no photophobia, visual disturbance, blocked nose or rhinorrhoea. On further …
Contributors All authors have been involved in the preparation of this letter.
Competing interests None declared.
Patient consent Obtained.
Provenance and peer review Not commissioned; externally peer reviewed.