Rapidly progressing giant invasive prolactinoma.

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.