Imaging of pituitary gland tumors.

MRI has clearly improved the visualization of the perisellar region. Its full role in the diagnosis of pituitary adenomas remains to be defined. It is likely that three-dimensional Fourier transform thin-section imaging of the gland will further refine the diagnosis of adenoma, allowing not only for the visualization of tiny adenomas, but possibly helping to distinguish them from other nonadenomatous intraglandular abnormalities.