18 years Female (DOB:9/8/1997)Reason: primary amenorrhea History: primary amenorrheaPROVIDER/ATTENDING NAME: IZHAR U QAMAR IZHAR U QAMAR MRI brain:There is redemonstration of a 90 x 85 x 65 mm cystic mass centered in the posterior aspect of the calvarium associated with adjacent scalloping. This follows spinal fluid on all pulse sequences. It extends anteriorly from the trigone and occipital horn of the left lateral ventricle. It appears stable relative to the previous exam. It appears to replace the left occipital lobe and left parietal lobe as well as the posterior aspect of the left temporal lobe. The posterior aspect of the corpus callosum is abbreviated. The left thalamus is smaller than the right thalamus.Normal vascular flow voids are present in the distal carotid and vertebral arteries, the basilar artery and the proximal anterior, middle and posterior cerebral arteries as well as the internal cerebral veins and superior sagittal sinus.The visualized portions of the paranasal sinuses demonstrate a small mucous retention cyst in the right maxillary sinus.. The visualized portions of the mastoid air cells are clear. The visualized portions of the orbits are intact.MRI pituitary:The pituitary gland is appropriate in overall height and morphology. The infundibulum of the pituitary gland is midline. No suprasellar or intrasellar mass is identified. The cavernous sinuses are intact bilaterally.
1.There is a very large CSF filled cyst present in the posterior aspect of the left calvarium. The left occipital lobe left parietal lobe in the posterior aspect of the left temporal lobe are replaced by this arachnoid cyst. There is associated distortion of the left thalamus. The trigone, occipital horn and temporal horn of the left lateral ventricle are also encompassed by this cyst. This cyst is stable compared to the prior exam. Most likely represents an arachnoid cyst which could've originated from the left lateral ventricle..2.The pituitary gland is appropriate in overall height and size and has not changed since the prior exam.No pituitary mass is appreciated