Intrapituitary fluid levels following haemorrhage: MRI appearances in 13 cases

Demonstration of fluid levels on MRI is well recognised in cerebral haemato mas, tumours and cysts. The occurrence of fluid levels within haemorrhagic pituitary tumours has not previously been described in detail. Evidence of haemorrhage was identified in 27 of 125 pituitary tumours. Fluid levels occ urred in 13 of these haemorrhagic tumours. No association with histological type was identified. Recognised risk factors for haemorrhage were identifi ed in half of the cases.