rheumatology imaging Flashcards
what is protrusio acetabuli ?
intrapelvic displacement of the acetabulum and the femoral head
what are the primary causes of protrusio acetabuli ?
can be associated with OA
what is atlanto axial subluxation associated with ?
rheumatoid arthiritis
what are the x ray findings associated. with scleroderma patients of the hand ?
acro-osteolysis
peri-articular osteoporosis
joint space narrowing
erosion
periarticular and subcutaneous calcifications
what drugs can cause pulmonary fibrosis ?
nitrofurantoin
amiodarone
bleomycin
what autoimmune diseases
cause pulmonary fibrosis ?
scleroderma
rheumatoid arthritis
scleroderma
what is the difference in presentation of calcinosis in dermatomyositis vs in scleroderma ?
more linear in dermatomyositis
what can be used for the calcinosis ?
calcium channel blocker
what does the x ray look like in psoriatic arthiritis ?
pencil in cup appearance
DIP affection
what are the x ray spine findings in ankylosing spond ?
bamboo sign
what is dagger sign associated with ?
ossification of supraspinous and interspinous ligament
found in ankylosing spondylitis
what signs are seen in MRI in sacroiliitis ?
romanus lesions
shiny corner
what is the difference between ankylosing spondylitis and psoriatic spondylitis ?
1- AS has less common peripheral joint involvement
2- DIP involvement is in psoriatic disease
3- sacroiliac involvement is bilateral and symmetric in AS , unilateral and asymmetric in psoriatic disease
what are the characteristic x ray findings in gout ?
well defined, punched out erosion
with perservatioin of the joint space
how to differentiate between gout and pseudogout on x ray ?
maintenance of joint space in pseudo gout
