23 results
Size
A solitary pulmonary nodule (SPN) is defined as a single intraparenchymal lesion less than 3 cm
cm are usually malignant ... either benign or malignant ... the chance of malignancy ... size, none was malignant ... #EBM #Radiology
Since these risk factors are numerous and have different effects on the malignancy risk, it is
effects on the malignancy ... probability of malignancy ... #Diagnosis #EBM ... #Radiology #Pulmonary
Primary Bone Tumors - Differential Diagnosis Algorithm 

Metastatic - Most common tumour in adults
 - Breast
Aggressive, Non-Malignant ... Aneurysmal Bone Cyst Malignant ... Leiomyosarcoma • Malignant ... Tumors #Tumours #MSK ... Causes #Oncology #Radiology
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
Systemic disease - Malignancy ... HSV, Varicella, EBV ... dislocation Malignant ... differential #diagnosis #msk
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
granulomatosis: • EBV-associated ... Neurocysticercosis Malignancy ... diagnosis #causes #radiology
Mallet Finger
Absence of a fracture does NOT exclude Mallet finger, the extension function of the DIP
MH/CCF/CWRU EM ... Mallet #Finger #Radiology ... #Orthopedics #MSK
Triquetral Fracture
The triquetrum is the second most commonly fractured carpal bone. Look for the "pooping duck
MH/CCF/CWRU EM ... Wrist #Carpal #Radiology ... Orthopedics #Sports #MSK
Scapholunate Dissociation
The spacing between all carpal bones should be 1-2 mm, look for the "Terry Thomas"
MH/CCF/CWRU EM ... Scaphoid #Carpal #Radiology ... Orthopedics #Sports #MSK
Perilunate Dislocation
On lateral wrist XR, the capitate ("apple") should sit in the lunate ("tea cup") which
MH/CCF/CWRU EM ... Wrist #Carpal #Radiology ... Orthopedics #Sports #MSK
ROLANDO FRACTURE 
Rolando fracture is an intraarticular three-part fracture of the base of the first metacarpal
MH/CCF/CWRU EM ... Thumb #Metacarpal #Radiology ... #Orthopedics #MSK