The radiology of pituitary adenomas.

The radiologic management of pituitary adenomas has changed considerably over the last decade. With the development of sophisticated new technologies, diagnostic testing has evolved from pneumoencephalography to pluridirectional tomography, computed tomography, and currently magnetic resonance imaging. This article discusses these dramatic changes and demonstrates the present state-of-the-art and utility of radiologic methods in diagnosing microadenomas and macroadenomas and in differentiating these lesions from parasella lesions.