31 results
Primary Bone Tumors - Differential Diagnosis Algorithm 

Metastatic - Most common tumour in adults
 - Breast
Primary Bone Tumors ... • Enchondroma ... • Aneurysmal Bone ... Histiocytoma #Primary #Bone ... #Bony #Tumors #
Diagram of different types of bone tumors that can occur around the knee on XRay -
different types of bone ... • Aneurysmal bone ... Ewing sarcoma • Enchondroma ... #Bone #Tumors # ... Diagnosis #Bony
Diagram of different types of bone tumors that can occur around the knee on XRay
Age <
different types of bone ... • Aneurysmal bone ... Ewing sarcoma • Enchondroma ... blade of grass sign ... #Bone #Tumors #
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 ... #Bone #Tumors # ... Diagnosis #Bony
Malignant Bone Tumors: Pathogenesis of X-ray appearance

 • Metastatic bone tumors (aka. cancerous cells from systemic
Malignant Bone Tumors ... • Metastatic bone ... common than primary bone ... and renal cancer bone ... Signs/Symptoms:
Bone Tumor Location within the Skeleton

Epiphysis: 
Only a few lesions are located in the epiphysis, so
Bone Tumor Location ... degenerative subchondral bone ... Chondrosarcoma, Enchondroma ... #Bone #Tumor #Location ... #Differential #Bony
Bone Lesion on X-Ray - Differential Diagnosis Algorithm 
Exostotic
 • Osteochondroma
Asymptomatic &/or Non-Active Bone Scam
 •
Bone Lesion on X-Ray ... /or Non-Active Bone ... • Unicameral Bone ... • Aneurysmal Bone ... Mineralization • Enchondroma
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
Causes of Knee Effusions ... distal to the knee ... - Giant cell tumor ... Chondroblastoma - Benign Tumors ... - Aneurysmal bone
Gardner's Syndrome
Multiple pre-malignant colonic polyps with soft tissue & bony tumours. Associated with mutation to the
soft tissue & bony ... tumours. ... Polyposis #Diagnosis #Signs
Congenital Adrenal Hyperplasia - 21-Hydroxylase Deficiency - Signs and Symptoms
 • Brain: Androgenization effects, Glucocorticoid effects,
Hydroxylase Deficiency - Signs ... hyperplasia and tumors ... , Adrenal rest tumor ... atypia (46,XX) • Bone ... fusion, Decreased bone