23rd May 2025

A 22-year-old female presents to A&E with visual field defect, headache, weight loss and intermittent galactorrhoea.

A 22-year-old female presents to A&E with visual field defect, headache, weight loss and intermittent galactorrhoea. She did not have facial flushing or hyperhidrosis. Bloods showed hypercalcaemia. She recalls her father had a medical condition for which he saw a doctor regularly. Sadly, he passed away from stomach cancer. The patient’s CT Head showed a brain tumour.

Given the history, what is the most likely cause of her symptoms?

Select the SINGLE most appropriate option from the list below. Select ONE option only.