Clivus

Question 1

normal signal in clivus

Answer 1

fatty marrow signal on T1

low signal in children

Question 2

chordoma

Answer 2

locally invasive tumor midline from notochord remnants (sacrum < clivus < vertebral column)

no internal matrix but calcifications

hyperintense T2 mass with bony destruction

Question 3

chondrosarcoma

Answer 3

centrally from clivus or parasagittal from petrous apex

Question 4

most common met to the clivus

Answer 4

breast cancer