• Rare, benign, well-differentiated, intraventricular
ependymal tumor, typically attached to ventricular wall
• Intraventricular, inferior 4th ventricle typical (60%)
• Other locations: Lateral > 3rd ventricle > spinal cord
• T2/FLAIR hyperintense intraventricular mass
○ Heterogeneity related to cystic changes; blood products
or Ca++ may be seen in larger lesions
• Variable enhancement, typically none to mild
• T2WI and FLAIR are often most sensitive sequences
• Subependymal giant cell astrocytoma
• 40% become symptomatic, often supratentorial
○ Related to increased intracranial pressure,
• Present in middle-aged/elderly adults (typically 5th-6th
• Treatment: Conservative management with serial imaging
• Surgical resection is curative in most cases
• Excellent prognosis for supratentorial lesions
○ Recurrence is extremely rare
• If 4th or lateral ventricular hyperintense mass in elderly
(Left) Sagittal graphic shows a
solid, well-circumscribed mass
solid, hyperintense mass along
the inferior 4th ventricle in
sensitive sequences to identify
classically have no or minimal
tumor is also present anterior
No comments:
Post a Comment
اكتب تعليق حول الموضوع