Benign neoplasm of pituitary gland [D35.2], Reason for Study: ^Reason: evaluate for pituitary abnormalities History: s/p transphenoidal surgery. Pituitary MRIComparing to preoperative scan, central portion of intrahepatic atrium nonenhancing lesion has been resection with minimal linear remained non-enhancing portion. On the other hand, bilateral lateral aspect of the lesion appear to be persistent [right side: 5mm (CC) x 4.2mm (RL); left side:3.6mm(CC) x 4.2mm (RL)]. Pituitary stalk is in the midline and shows normal enhancement and size. No other abnormal enhancement is seen.The suprasellar cistern, optic chiasm, hypothalamus, and cavernous sinuses are unremarkable. The orbits and contents are unremarkable. Brain MRI No evidence of acute ischemic or hemorrhagic lesion.No evidence of abnormal enhancement.Redemonstration of a small focus of gray matter heterotopia along the right frontal horn is unchanged. The ventricles, sulci and cisterns are symmetric and unremarkable. There is no mass, mass effect, edema, midline shift, intra- or extra-axial fluid collection, hemorrhage, restricted diffusion/acute ischemia or abnormal contrast enhancement. The midline structures and cranial-cervical junction are normal. Normal flow voids are identified in the major intracranial vessels. The paranasal sinuses and mastoid air cells are clear.Brain MRV2-D TOF MRV brain and 3D MRV brain post-gadolinium with maximum intensity projections of the superficial/deep intracranial venous drainage demonstrate hypoplastic left transverse sinus. However, normal flow enhancements were seen in the superior sagittal sinus, right transverse sinuses, sigmoid sinuses, internal cerebral veins, vein of Galen and straight sinus.There is no evidence of venous occlusive disease.
1. Central portion of previously seen intra pituitary non enhancing lesion has been near totally resected. However, bilateral lateral aspects of the lesion appear to be remained. There is no evidence of abnormal enhancement. And sphenoid sinus does not show any postoperative unusual finding.2. No evidence of acute ischemic or hemorrhagic lesion. No abnormal enhancement.3. Unchanged small right frontal horn area gray matter heterotopia since prior scan.4. Normal MR venogram without evidence of major venous sinus occlusion. 