Rheum Questions

Question 1

Ank Spond XR findings

Answer 1

SIJ -cortical outline lost (early) -juxta articular osteosclerosis -erosions -joint ankylosis Lumbar spine -Loss of lumbar lordosis -Squaring of vertebrae -Syndesmophytes- thoracolumbar region -Bamboo spine (bony bridging of vertebrae) and osteoporosis -Apophyseal joint fusion

Question 2

Serology

Answer 2

SLE- ANA, DsDNA, Anti smith, complement RA- RF, anti CCP SSc- ACA (limited- pulm HTN, fibrosis), Scl70 (Diffuse- fibrosis). RNA pol III

Question 3

RA pattern on XR

Answer 3

Erosions Soft Tissue Swellings osteoporosis- initially juxta articular Joint space narrowing PIP, MCP, ulnar styloid NO DIP Symmetric Later: Subchondral cyst subluxation

Question 4

OA pattern on XR

Answer 4

Joint space narrowing (asymmetric) Sclerosis at joint margins Osteophytes Joint erosions subchondral cysts

Question 5

PsA pattern on XR

Answer 5

Enthesitis marginal bone erosions pencil in cup deformities bone proliferation periostitis- new bone layer arthritis mutlians