57 results
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
manifestations- Pneumonitis ... splenomegaly Other infections ... Infectious: ... #Brain #differential ... #diagnosis #causes
Causes of Thrombocytosis - Differential Diagnosis Algorithm
Spurious:
 • Artifact (redo CBC)
Autonomous:
 • Essential thrombocytosis
 • Polycythemia
Causes of Thrombocytosis ... - Differential ... Myelofibrosis Infectious ... Inflammatory: • IBD ... Thrombocytosis #Differential
Dyspnea - Differential Diagnosis Framework

Cardiovascular Causes of Dyspnea:
 • Myocardium:
	- Heart failure
	- CAD/ACS
	- Valvulopathy
 • Electrical:
	-
Dyspnea - Differential ... • Parenchyma: ILD ... of Dyspnea: • Chest ... Transverse myelitis • Hematology ... #dyspnea #sob #differential
Causes of Relative Bradycardia - Note the propensity for intracellular organisms.
Infectious: 
Legionella, Psittacosis, Q fever, Typhoid
Causes of Relative ... Infectious: Legionella ... ß-blockers, CNS lesions ... #differential # ... infectiousdiseases #table
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
Hypersensitivity pneumonitis ... Hypersensitivity pneumonitis ... Radiology #Pulmonary #CTChest ... NodularPattern #Differential ... #Comparison #Table
Dermatological semiology of Cutaneous Vasculitis 

Clinicopathologic correlations
 • Purpura, papules, pustules, necrosis: involvement of small vessels
Identification of causes ... vasculitis (3%) • Infections ... 2%) • Other: IBD ... semiology #signs #lesions ... #differential
Uveitis - Definition, Causes and SUN Classification

Inflammation of the iris, ciliary body, vitreous, retina and/or choroid
Incidence
retinal ischemia Causes ... Vogt-Koyanagi-Harada, IBD ... multiple sclerosis Infectious ... Classification #Differential ... Ophthalmology #Rheumatology
Hemoptysis - Differential Diagnosis Framework
Airways: 
 • Bronchitis
 • Bronchiectasis
 • Malignancy: Primary bronchogenic CA, Endobronchial
Hemoptysis - Differential ... Fistulas • Dieulafoy lesion ... Parenchyma: • Infection ... Goodpastures, Lupus Pneumonitis ... Diagnosis #pulmonary #causes
Causes of Dizziness - Vertigo - Differential Diagnosis Algorithm
True Vertigo - Illusion of Rotary Movement
Peripheral Vestibular
- Vertigo - Differential ... Labrynthitis/Vestibular Neuronitis ... nystagmus - Infection ... Space-Occupying Lesion ... Diagnosis #Algorithm #Causes
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
Purpura - Differential ... hemorrhagic skin lesions ... SLE) - Viral infections ... APLS • Acute Infectious ... Vasculopathy #Purpura #Differential