The Calgary Guide to Understanding Disease @TheCalgaryGuide
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Account created for The Calgary Guide to Understanding Disease - Linking pathophysiology to clinical presentation - http://calgaryguide.ucalgary.ca/
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Malignant Bone Tumors: Pathogenesis of X-ray appearance

 • Metastatic bone tumors (aka. cancerous cells from systemic
Pathogenesis of X-ray ... tumors on X-ray ... Signs/Symptoms: ... BoneTumors #Malignant #Radiology ... #Diagnosis #XRay
Osteoarthritis (OA): X-ray features 
 - Joint space narrowing (least specific)
 - Subchondral Cysts (pockets of
Osteoarthritis (OA): X-ray ... (Thickening of bone ... under the areas of bone-bone ... Osteoarthritis #OA #Xray ... #radiology #diagnosis
IgA Vasculitis – Henoch Scholein Purpura: Pathogenesis and Clinical Findings

 - Infectious Agents - 50% have
IgA Vasculitis – ... #HSP #IgA #Vasculitis ... #HenochScholeinPurpura ... Pathophysiology #Diagnosis ... #Signs #Symptoms
Rheumatoid arthritis (RA): X-ray features
 • Soft tissue swelling (best seen by comparing left & right
arthritis (RA): X-ray ... Narrowing • Bony ... the articular bone ... #RA #HandXray #Diagnosis ... #Radiology #Clinical
Anterior Shoulder Dislocation: Pathogenesis, clinical, and radiographic findings

Trauma, Fall on, outstretched arm, Overhead throwing => Abduction
on axillary x-ray ... and underlying bone ... joint capsule or bone ... #Dislocation #Diagnosis ... #signs #symptoms
Benign Primary Bone Tumors: Pathogenesis of X-ray appearance
 • "Geographic" bone destruction
 • Lack of soft-tissue
Benign Primary Bone ... Pathogenesis of X-ray ... • "Geographic" bone ... Benign #BoneTumors #XRay ... #diagnosis #Radiology
Psoriatic Arthritis: Pathogenesis and Clinical findings

In tendons and connective tissues:
 • Enthesitis  - Pain/tenderness over
insertion into bone ... destructive) • X-ray ... pathophysiology #diagnosis ... #signs #symptoms
Rheumatoid arthritis (RA): Pathogenesis and Joint diseases features
 • RA affects 1% of population, women >
in subchondral bone ... Swelling notable on Xray ... and subcondral bone ... pathophysiology #signs #symptoms ... #diagnosis
Avascular Necrosis: Pathogenesis and Clinical Findings
 • Physical Trauma (esp. to the scaphoid bone with damage
to the scaphoid bone ... vessels that perfuse bone ... intermittent) - X-Ray ... pathophysiology #diagnosis ... #signs #symptoms
Charcot Joint - Neuropathic Arthropathy: Pathogenesis and Clinical findings
 • Impaired joint protection -> abnormal joint
periarticular bone ... resorption -> On X-ray ... cartilage -> On X-ray ... pathophysiology #diagnosis ... #signs #symptoms