69 results
Malignant Bone Tumors: Pathogenesis of X-ray appearance

 • Metastatic bone tumors (aka. cancerous cells from systemic
Malignant Bone Tumors ... tumors on X-ray ... Signs/Symptoms: ... Malignant #Radiology #Diagnosis ... #XRay #Bony
Diagram of different types of bone tumors that can occur around the knee on XRay -
different types of bone ... • Aneurysmal bone ... #Tumors #Diagnosis ... #peds #pediatrics ... #msk #lesions #
Diagram of different types of bone tumors that can occur around the knee on XRay -
different types of bone ... blade of grass sign ... ) • Enostosis/bone ... docskalski #Knee #Bone ... #Tumors #Diagnosis
Diagram of different types of bone tumors that can occur around the knee on XRay
Age <
different types of bone ... • Aneurysmal bone ... blade of grass sign ... #Diagnosis #Radiology ... #XRay #MSK #pediatrics
Bone Lesion on X-Ray - Differential Diagnosis Algorithm 
Exostotic
 • Osteochondroma
Asymptomatic &/or Non-Active Bone Scam
 •
Bone Lesion on X-Ray ... - Differential Diagnosis ... • Giant Cell Tumor ... Constitutional Symptoms ... #XRay #MSK #Differential
Stress Fracture: Pathogenesis and clinical findings
Abnormal biomechanics, Repetitive impact activities
=> Repetitive subthreshold mechanical loading
=> Bone strain
=>
mechanical loading => Bone ... strain => Bone ... StressFractures #msk ... #orthopedics #pathophysiology ... #symptoms #signs
Spondylolysis & Spondylolisthesis: Pathogenesis and Clinical Findings

Pars interarticularis stress fracture (spondylolysis) - most frequently in the
tenderness • Positive one-legged ... XR — scotty dog sign ... Spondylolisthesis #MSK ... #diagnosis #pathophysiology ... #signs #symptoms
Hyperparathyroidism - Primary vs Secondary vs Tertiary 
Lab Comparison:
 • Primary Hyperparathyroidism: ↑→PTH, ↑Calcium, ↑Vitamin D,
: Commonly no signs ... easily/weakness, Bone ... /joint pain Psychiatric ... Hyperparathyroidism #diagnosis ... Secondary #Tertiary #pathophysiology
Symptoms of Hypophosphatemia
 • CNS: Seizures, Delirium, Paresthesias, Central & extrapontine myelinolysis, Hallucinations, Fatigue
 • Hematologic:
Symptoms of Hypophosphatemia ... Heart failure • Bones ... Growth retardation, Bone ... pain • MSK: Proximal ... #Signs #Diagnosis
Retinoblastoma: Pathogenesis and clinical findings
 • Sporadic mutation -> One allele of RB1 tumor suppressor gene
Sporadic mutation -> One ... gene mutated in one ... Inherited mutation -> One ... Retinoblastoma Signs ... #signs #symptoms