A 44 year old woman presents with complaints of persistent headache. Her complaints started a year ago and she had been to several doctors with no relief of symptoms. She also reports difficulty in swallowing and hoarseness of voice since one year. On examination, she was overweight. She had coarse facial features, enlarged nose and macroglossia with prominent lower jaw. She had elevated blood pressure. Her blood glucose levels were also elevated.
Her insulin-like growth factor-1 levels were elevated. Ophthalmologic evaluation revealed bitemporal hemianopia. An X-ray of both the feet is shown. Which other radiological investigation is the most important to detect the primary cause? Source: Rao KS et al. J NTR Univ Health Sci 2013;2:60-3
