[Pineal gland cysts: clinical and radiological course].

We describe the clinical and radiologic evolution of pineal gland cysts found in computed tomography or magnetic resonance images in 12 patients. The patients had complained of headache and/or lateralized sensory symptoms. None had signs of intracranial hypertension or tectal dysfunction. Only one patient, who had partial epilepsy and a large cyst, was treated by ventriculo-cystic shunt; the rest were treated conservatively. The follow-up period in 11 patients was from 2 to 5 years. No changes were observed in cyst size or radiological characteristics; nor did signs of tectal dysfunction develop. In patients with no signs or symptoms directly attributable to these cysts, surgery can be avoided if no radiological changes are found upon follow-up.