BONE LESIONS
NORMAL SPINAL BONE MARROW
MRI SPINE BONE MARROW SIGNAL PART I NORMAL AGE RELATED.pdfMRI SPINE BONE MARROW SIGNAL PART II T1WI DDX.pdfAPPROACH
AGGRESSIVE APPEARANCE
Indistinct margins
Wide zone of transition
Aggressive periosteal reaction
Permeative appearance
ST component
Endosteal scalloping
NONAGGRESSIVE APPEARANCE
Sclerotic margins
Narrow zone of transition
Well-circumscribed
No endosteal scalloping, aggressive periosteal reaction or ST component
Think of bone lesions in 4 groups:
Aggressive features
IDK what it is (aggressive but nonspecific features)
Very common in clinical practice; ddx by age.
Adult: mets/myeloma
Children: ewing/infection
I know what it is! (lesion w/ characteristic imaging features)
Very rare in clinical practice: osteosarcoma, chondrosarcoma.
Nonaggressive features
IDK what it is (nonaggressive but nonspecific features)
Very common in clinical practice; can say fibro-osseous lesion to sound smart.
I know what it is! (characteristic imaging features)
Enchondroma, osteoid osteoma, non-ossifying fibroma, hemangioma, giant cell tumor, fibrous dysplasia.
LUCENT LESIONS OF BONE
SCLEROTIC LESIONS OF BONE
RADIOPEDIA
BONE FORMING LESIONS
MS 103-Osteoid Lesion of Bone Live Lecture Recording_Handout.pdfMS 105-Chondroid Cartilaginous Lesions of Bone Live Lecture Recording_Handout.pdf