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Primary Bone Tumors - Differential Diagnosis Algorithm 

Metastatic - Most common tumour in adults
 - Breast
Primary Bone Tumors ... - Most common tumour ... • Giant Cell Tumour ... #Bony #Tumors # ... Tumours #MSK #Differential
Diagram of different types of bone tumors that can occur around the knee on XRay -
tumors that can ... • Giant cell tumor ... degenerative subchondral cyst ... #Tumors #Diagnosis ... #Bony #Differential
Diagram of different types of bone tumors that can occur around the knee on XRay
Age <
tumors that can ... bone cyst • Osteoid ... • Giant cell tumor ... #Tumors #Lesions ... #Bony #Differential
Diagram of different types of bone tumors that can occur around the knee on XRay -
tumors that can ... bone cyst • Osteoid ... #Tumors #Diagnosis ... #Bony #Differential ... #Radiology #XRay
Bone Tumor Location within the Skeleton

Epiphysis: 
Only a few lesions are located in the epiphysis, so
Bone Tumor Location ... , a giant cell tumor ... cyst must be added ... #Bone #Tumor #Location ... Diaphysis #Epiphysis #Radiology
Stridor - Differential Diagnosis Framework:
High-pitched, variable respiratory sound

ETIOLOGIES:
Infectious:
 • Retropharyngeal abscess
 • Acute epiglottitis
 • Peritonsillar
Stridor - Differential ... Mechanical: • Larynx fracture ... • Bronchogenic cyst ... Tracheal mass/tumor ... stenosis #Stridor #differential
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
Intra-articulation fracture ... - Giant cell tumor ... Chondroblastoma - Benign Tumors ... - Aneurysmal bone ... cyst - Osteochondroma
The table on the left is the overall table for mediastinal masses.
In the next paragraphs we
- Neurogenic Tumors ... - Neurogenic tumors ... - Germ cell tumors ... Mediastinal #Mass #Differential ... Middle #Posterior #RadiologyAssistant
Liposclerosing Myxofibrous Tumor (LSMFT) - MSK Radiology
Imaging Findings:
 • Geographic lucent lesion with sclerotic margin in
Liposclerosing Myxofibrous Tumor ... Differential diagnosis ... for bone lesion ... cyst: expansile ... #Myxofibrous #Tumor