Pediatric Intracranial Germinoma Etiology: germ cell tumor Imaging: concurrent pineal + hypothalamic masses = germinoma, suprasellar (60%), pineal (40%) Radiology Cases of Intracranial Germinoma Sagittal T2 MRI without contrast (left) shows a small isointense lesion in the region of the pineal gland that on sagittal (middle) and axial (right) T1 MRI with contrast of the brain shows mild enhancement.