Oh, the MRI results are as follows:
HISTORY: Intracranial mass. History of seizures. TECHNIQUE: Multiplanar pre and postcontrast enhanced MR imaging of the brain was performed using standard pulse sequences at 1.5 T, including FLAIR, EPI diffusion-weighted imaging, and gradient echo imaging. 5 cc of Gadavist gadolinium based contrast was injected intravenously. COMPARISON: CT from Danbury Hospital dated 11/24/2019. FINDINGS: EXTRA AXIAL SPACES INCLUDING BASAL CISTERNS: There is a mass in the right middle cranial fossa which appears to be predominantly extra-axial and is circumscribed and lobulated and displays predominantly decreased T1 signal and heterogeneous predominantly increased T2 signal and marked restricted diffusion. Following contrast administration there is a thin rim of faint marginal enhancement. It measures 4.8 x 4.8 x 5.8 cm. The lesion insinuates along the surface of the temporal lobe and anterior sylvian fissure and contacts the right middle cerebral artery and its distal branches. contrast administration there is some marginal enhancement. Mass effect sulcal effacement and right to left subfalcine midline shift; and uncal herniation results in effacement of the right perimesencephalic cistern. VENTRICULAR SYSTEM: There is effacement of the temporal horn of the right lateral ventricle related to mass effect from the right middle cranial fossa mass lesion. CEREBRAL PARENCHYMA: There is a lesion in the right middle cranial fossa that insinuates along the surface of the right temporal lobe with displacement that results in sulcal effacement and uncal herniation is right to left subfalcine midline shift (3 mm).. While the lesion is probably mainly extra-axial there could be an intra-axial component as cortex of the polar region of the temporal lobe appears to partially envelop the mass lesion. There is no intra-axial edema or abnormal enhancement. CEREBELLUM: The cerebellum is normal. BRAINSTEM: There is mild mass effect upon the right cerebral peduncle due to uncal herniation as a consequence of the mass lesion in the right middle cranial fossa. The remainder of the brain stem is normal. CALVARIUM: Normal VASCULAR SYSTEM: Appropriate arterial and dural sinus flow voids. The right middle cranial fossa mass lesion contacts the cavernous sinus and supraclinoid internal carotid artery as well as right MCA and its branches. VISUALIZED PARANASAL SINUSES: There is mucosal thickening within the maxillary sinus and ethmoid air cells. Air-fluid levels are present within both maxillary antra. VISUALIZED ORBITS: The orbital structures, including optic nerve complexes, are normal. VISUALIZED UPPER CERVICAL SPINE: Normal SELLA AND SKULL BASE: The sellar region and skull base are normal. | |
Impression 1. Right middle cranial fossa mass with imaging features compatible with an epidermoid tumor. This is predominantly extra-axial but insinuates along the surface of the right temporal lobe with some findings raising concern for intra-axial extension. Associated mass effect with sulcal effacement, 3 mm of midline shift, and uncal herniation. |
No comments:
Post a Comment