Objective: We report an extremely rare case of a giant invasive prolactinoma presenting as a nasopharyngeal tumour.
Method: Case report and literature review regarding giant prolactinoma.
Results: Giant prolactinoma is a rare form of prolactinoma which accounts for 0.5-4.4 per cent of all pituitary tumours. It is more common in men and generally presents with symptoms of endocrine disturbance or neurological deficit.
Conclusion: To our knowledge, this is the first report of giant prolactinoma presenting with symptoms of sinusitis and nasopharyngeal tumour.