BRAIN - Chromophobe adenoma of the pituitary

At the base of the brain there is a haemorrhagic mass some 3 x 2 cm; there is haemorrhage in the surrounding tissues and in the brain immediately above, presumably due to surgical intervention.
This patient, at the age of 27, was admitted for investigation of "brain tumour". At operation some days later the lesion was partly removed and following this he developed a right-sided paralysis and shortly afterwards died. At autopsy, the pituitary was replaced by tumour which had expanded the fossa and extended into the anterior fossa on the left. The tumour was distinct from the optic chiasma; the third ventricle was compressed from below. Histologically the lesion was a chromophobe adenoma of the pituitary.