47 results
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
Differential diagnosis ... : 'signet ring sign ... LIP #Clinical #Diagnosis ... #Radiology #CTChest ... #Differential #Comparison
The PA-film shows a silhouette sign of the left heart border.
Even without looking at the lateral
shows a silhouette sign ... looking at the lateral ... must be located anteriorly ... #Clinical #Radiology ... #CXR #Pneumonia
Anterior Shoulder Dislocation: Pathogenesis, clinical, and radiographic findings

Trauma, Fall on, outstretched arm, Overhead throwing => Abduction
Anterior Shoulder ... Acute loss of lateral ... #Dislocation #Diagnosis ... #signs #symptoms ... #orthopedics #pathophysiology
Chilaiditi Sign on Chest X-Ray
Anterior interposition of the colon between the hemidiaphragm and the liver.
Chilaiditi sign
Chilaiditi Sign ... on Chest X-Ray Anterior ... Chilaiditi sign ... #Chilaiditi #Sign ... #Chest #XRay #CXR
Femoral Head Fracture: Pathogenesis and clinical findings
 • Posterior hip dislocation -> Impaction force from femoral
from impact onto lateral ... hip Signs/Symptoms ... Fractures #msk #diagnosis ... #pathophysiology ... #signs #symptoms
Hilum Overlay Sign on Chest X-Ray
If a mass is in contact with the pulmonary vessels then,
Hilum Overlay Sign ... the silhouette sign ... This was later proven ... Hilum #Overlay #Sign ... #CXR
Tree in Bud Sign
The Tree-in-Bud sign represents Endobronchial spread in a linear branching pattern and centrilobular
Tree in Bud Sign ... The Tree-in-Bud sign ... Bud #TreeInBud #Sign ... #diagnosis #clinical ... #pathophysiology
Maculopapular - Diagnostic Algorithm
Pathophysiology:
- Catch-all term with a wide range of potential pathophysiologic mechanisms and causative
Maculopapular - Diagnostic ... Algorithm Pathophysiology ... Ill-appearing, vital sign ... Color #Targetoid #Algorithm ... #Differential #
Meralgia paresthetica: Pathogenesis and Clinical Findings
Compression/injury of Lateral Femoral Cutaneous Nerve (LFCN) -> Meralgia paresthetica
 •
Compression/injury of Lateral ... ligament (near anterior ... MeralgiaParesthetica #MSK #pathophysiology ... #differential # ... diagnosis #signs
Causes of Cystic Renal Mass - Differential Diagnosis Algorithm
Benign - Anechoic on ultrasound, Well-demarcated on ultrasound/CT,
Renal Mass - Differential ... Diagnosis Algorithm ... Polycystic - Multiple bilateral ... Carcinoma - No signs ... #Diagnosis #Algorithm