There is a large tan-coloured nodular rough-surfaced mass lying to the right of the brain stem. This
extends into the right temporal lobe and shows the right internal carotid artery at its upper border.
There is no apparent increase in intracranial pressure.
This man presented at the age of 60 with diplopia. An enlarged pituitary fossa was
demonstrated and biopsy showed an eosinophilic adenoma. He developed the features of
acromegaly and latterly showed symptoms suggestive of extension of the tumour into the right