17 results
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
: 'signet ring sign ... Clinical #Diagnosis #Radiology ... #CTChest #Cystic ... #Differential #Comparison ... #Table #RadiologyAssistant
Triquetral Fracture
The triquetrum is the second most commonly fractured carpal bone. Look for the "pooping duck
"pooping duck sign ... "pooping duck sign ... MH/CCF/CWRU EM ... Wrist #Carpal #Radiology ... #Sports #MSK
Perilunate Dislocation
On lateral wrist XR, the capitate ("apple") should sit in the lunate ("tea cup") which
Disposition: Pending orthopedic ... MH/CCF/CWRU EM ... Wrist #Carpal #Radiology ... Diagnosis #Management #Orthopedics ... #Sports #MSK
Posterior Elbow Dislocation
The elbow is the second most commonly dislocated major joint in adults and the
can't make A-OK sign ... Splint: Posterior long ... MH/CCF/CWRU EM ... Dislocation #Posterior #Radiology ... #Sports #MSK
Scapholunate Dissociation
The spacing between all carpal bones should be 1-2 mm, look for the "Terry Thomas"
"Terry Thomas" sign ... ("Terry Thomas sign ... MH/CCF/CWRU EM ... Scaphoid #Carpal #Radiology ... #Sports #MSK
Supracondylar Elbow Fracture
• Most common elbow fracture in children, peak age 5-7 
• When looking at
anterior sail sign ... Splint: Posterior long ... MH/CCF/CWRU EM ... Elbow #Humerus #Radiology ... #MSK
Monteggia Fracture 
Fracture of proximal ulnar shaft with radial head dislocation. Remember “MUGR” to recall where
Splint: Posterior long ... • If stable ... MH/CCF/CWRU EM ... Forearm #Ulnar #Radiology ... #Proximal #MSK
Estimated Medical Radiation Doses for 5 Year-Old Child

3-view ankle	0.0015 mSv	1/14th CXRs
2-view chest	0.02 mSv	1 CXRs
Anteroposterior and lateral
14th CXRs 2-view chest ... 200 CXRs Chest ... #PatientInfo #Radiology ... #CT #Nuclear #Comparison ... #Table #Risks #
RADIAL HEAD FRACTURE 
Radial head fractures are the most common elbow fracture in adults and are
anterior sail sign ... II-IV, pending orthopedic ... MH/CCF/CWRU EM ... Fracture #Elbow #Radiology ... #MSK
Radiation Dose to Adults from Common Imaging Examinations
ABDOMINAL REGION
 - Computed Tomography (CT) — Abdomen and
2 years CHEST ... Tomography (CT) — Lung ... #PatientInfo #Radiology ... #CT #Nuclear #Comparison ... #Table #Risks #