Figure 4a. Resonance Imaging T1-weighted sequences on sagittal plan before gadolinium chelate (diethylene-triamine pentacetate) administration. Extra-axial macroadenoma developing into the intra- and suprasellar and parasellar space including carotid arteries (arrows), with non-homogenous signal due to calcifications and cysts. (Kindly provided by S. Cirillo, II University of Naples).