31 results
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
Nodular LCH: - Sarcoidosis ... : 'signet ring sign ... central dot. - LIP #Clinical ... #Diagnosis #Radiology ... #Cysts #Differential
Spondylolysis & Spondylolisthesis: Pathogenesis and Clinical Findings

Pars interarticularis stress fracture (spondylolysis) - most frequently in the
Pathogenesis and Clinical ... tenderness • Positive ... — scotty dog sign ... Spondylolisthesis #MSK ... pathophysiology #signs
Positive Throckmorton sign in a case of chronic osteomyelitis of the left hip. X-ray findings:
1) complete
sign in a case ... femur Throckmorton sign ... as John Thomas sign ... #Clinical #Radiology ... #Throckmorton #Sign
Causes of Cystic Renal Mass - Differential Diagnosis Algorithm
Benign - Anechoic on ultrasound, Well-demarcated on ultrasound/CT,
Causes of Cystic ... Renal Mass - Differential ... , Positive family ... Carcinoma - No signs ... #RenalMass #Nephrology
Hoffman's sign. Even in this specific case, accompanied by a clonus outline (rhythmic contractions). The median
Hoffman's sign. ... #Hoffmanns #Sign ... #Reflex #Positive ... #Abnormal #clinical ... #video #neurology
Heart failure with Reduced Ejection Fraction (HFrEF)
Clinical Presentation
1. Typical symptoms: dyspnea, orthopnea paroxysmal noctumal dyspnea, fatigue,
Fraction (HFrEF) Clinical ... More Specific Signs ... Less Specific Signs ... Chest x-ray: signs ... → no signs of CXR
Cannon A waves during AVNRT on Physical Exam
In AVNRT, the atria and ventricles contract nearly simultaneously
to diagnose the case ... excludes other differentials ... that’s called “clinical ... ’s called Frog sign ... #Neck #Frog #Sign
Pleural effusion is not always visible as a meniscus in the costophrenic angle. 
A subpulmonic effusion
In these cases, ... a patient with signs ... there is a high position ... #Clinical #Radiology ... #CXR #CHF #Pleural
CNS Infections - Viral Encephalitis and Bacterial Meningitis - Differential Diagnosis Framework

Viral Encephalitis:
MCC: Enteroviruses (e.g., coxsackievirus
• Common clinical ... Acute meningeal signs ... • Gram stain: Positive ... 90% • Culture: Positive ... #diagnosis #neurology
Trendelenburg Gait: Pathogenesis and clinical findings

Skeletal Pathology of the Hip
 • Arthritis
 • Congenital hip dysplasia
Pathogenesis and clinical ... Chondrodysplasia Neurologic ... pathophysiology #causes ... #symptoms #signs ... #diagnosis #msk