MRIが有用であったCushing病の2例

Abstract

Magnetic resonance imaging (MRI) of two patients with surgically proven pituitary microadenoma of Cushing's disease is reviewed. Both cases had CT evidence of a tumor. Both adenomas were demonstrated with MR. One adenoma showed low signal intensity in T1 weighted images and high intensity in T2 weighted images. The other showed various signal intensity probably due to intratumoral hemorrhage. The signal intensity of adrenocorticotropic hormone producing microadenomas has been reported previously. It may not, however, show a definite tendency. MR imaging was useful in the evaluation of pituitary microadenomas because of the lack of bony artifacts, higher contrast and multiplaner capability. The signal intensity of tumors is variable, and interenting in point of the relationship between it and the characteristics of tumors.