Tumor/Infx

Question 1

MC location for enchondroma

Answer 1

Phalanges

Question 2

Sharply delineated focus of active infx surrounded by eburnation

Answer 2

Brodie (Bone) abscess

Question 3

aka for painless bilateral knee effusion in syphilitic children

Answer 3

Clutton joints

Question 4

Which of the following is false regarding multiple myeloma

a. pedicles involved late in dz
b. periosteal new bone formation is rare
c. 30% of cases have normal MRI
d. Myeloma affects mandible rarely compared to mets

Answer 4

d. Mandible involvement MC in myeloma than mets

Question 5

MC site of osteoma

Answer 5

Frontal sinus

Question 6

Which is false regarding rad findings of osteofibrous dysplasia @ long tubular bones

a. lesions may be purely blastic
b. ground glass matrix is common’
c. involvement @ distal humerus is typical
d. osseous deformity may be exaggerated d/t path fx

Answer 6

C. involvement at prox humerus is mc

Question 7

what is the radiographic latent period for spinal lesions?

Answer 7

3 weeks

Question 8

MC skeletal location of simple bone cyst

Answer 8

Prox humerus

Question 9

T/F: Mult myeloma @ appendicular skeleton likes the olecranon

Answer 9

true

Question 10

T/F: enchondromas are mc in the lower extremity

Answer 10

false