Cerebral cysts [G93.0], Reason for Study: ^Reason: brain lesion; surgical planning History: brain lesion Motion artifacts degraded image quality.Multiple fiducial markers attached on scalp.There is 16.9mm x 15.7mm sized round non-enhancing mass lesion located at the level of foramen of Monroe associated with ventriculomegaly. The lesion shows high signal intensity with subtle central low signal intensity on T2 and low signal intensity on T1 images indicating the possible diagnosis of colloid cyst.Right frontal approach ventriculostomy tube is seen with scalp swelling which is likely represent postoperative change. The tip of the ventriculostomy tube appears to be within the cavum septum pellucidum. 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.
About 17mm x 16mm sized foramen of Monroe lesion likely represent colloid cyst with hydrocephalus.Right frontal approach ventriculostomy tube was placed and the tip is located in midline, possibly within the septum pellucidum.