[Diagnosis of pituitary microadenoma on coronal CT scan]

38 patients with functional microadenoma were investigated with high-resolution computed tomography and only coronal scan was done. All patients were documented with surgery and pathology. On coronal CT scan, the density, height and the shape of the pituitary gland, as well as the bony structure of the sellar floor could be displayed clearly. Our results indicated that these four criteria were reliable in the diagnosis of microadenoma. If coronal CT demonstrates a normal pituitary gland, in our opinion, it is not necessary to take other X-ray examinations.