21 results
Myositis and Myopathies
Polymyositis 
 • Progressive, symmetric muscle weakness 
 • Elevated CK, +Anti-Jo, +Anti-Mi2
Dermatomyositis
stiffness in proximal joints ... muscle pain and/or joint ... myopathy) VA Joint ... #differential #diagnosis ... #comparison #rheumatology
Gout (Gouty Arthritis) - MSK Radiology
Imaging Findings:
 • Eccentric soft-tissue densities surrounding the third proximal interphalangeal
) - MSK Radiology ... interphalangeal joint ... with joint-space ... - **MSK rads ... #msk #rheumatology
Approach to Joint Pain - Diagnostic Framework

1) Chronicity
2) Inflammatory vs Non-Inflammatory
3) Number of Joints Involved

1) Chronicity:
Pain - Diagnostic ... reactive arthritis, gout ... #Joint #Pain #MSK ... #rheumatology # ... #differential #diagnosis
Approach to Joint Pain - Arthritis Differential Diagnosis Framework

Inflammatory Versus Noninflammatory Pain
 • Is it inflammatory
Arthritis Differential Diagnosis ... - Autoimmune Rheumatologic ... aureus • Gram-negative ... #Differential #Diagnosis ... #MSK #rheumatology
Gout Tophus on POCUS

Linear transducer about 1cm away from bone/joint, typical of small joint in a
Gout Tophus on POCUS ... away from bone/joint ... suggests gout. ... clinical #POCUS #ultrasound ... #msk #rheumatology
CPPD vs Gout

== CPPD == 

Think About CPPD When:
 • Self-limited synovitis after surgery/trauma (> 65
culture used to diagnose ... Needle-shaped, negatively ... stain and culture- Diagnose ... #Comparison #rheumatology ... #Diagnosis
Knee Effusions - Arthrocentesis Interpretation

Inflammatory arthritis:
 • Color: Yellow-> Green
 • Clarity: Opaque
 • Viscosity: Low
poor • Culture: Negative ... analysis: • MSU ... : Gout • CPPD: ... Interpretation #diagnosis ... #septic #joint
VT versus SVT with Aberration - Interpretation Cheat Sheet

Features favouring VT
● Absence of typical RBBB or
Positive or negative ... nadir (lowest point ... ) of S > 100 ms ... Aberration #Aberrancy #Comparison ... #Diagnosis #Cardiology
Pseudogout: pathogenesis and clinical findings
 - Idiopathic (vast majority of cases) -> Mechanism unknown
 - Familial
produced, incr gut ... crystals from joints ... Hypomagnesia -> The relative ... high-resolution ultrasound ... Pathophysiology #Diagnosis
SAPHO Syndrome Summary

What?
SAPHO syndrome is a rare chronic inflammatory disorder of bone, joint, and skin characterized
Diagnosis: ... • A clinical diagnosis ... • Rule out other ... affected areas and if negative ... SAPHO #Syndrome #Rheumatology