113 results
Causes of Hypercalcemia due to increased Vitamin D levels
 • The BIG 3:
Tuberculosis • Fungal Infections ... Pneumocystis jiroveci, Histoplasmosis ... VitaminD #causes #differential ... #diagnosis #endocrinology
Reversed Halo Sign - Infectious and Non-Infectious Differential Diagnosis
Definition: A focal rounded area of GGO surrounded
Reversed Halo Sign - Infectious ... and Non-Infectious ... Differential Diagnosis ... Paracoccidioidomycosis, Histoplasmosis ... NonInfectious #Differential
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
splenomegaly Other infections ... M, avium, TB, histoplasmosis ... multiple lesions Infectious ... Lesions #Brain #differential ... causes #radiology #neurology
Causes of Encephalopathy - Differential Diagnosis Algorithm
Hyperacute:
 - Primary Neurologic: Vascular (IS, ICH), Seizure, Migraine, Trauma
Encephalopathy - Differential ... Acute: - Primary Neurologic ... demyelination), Infectious ... Inflammatory, Infectious ... Encephalopathy #Differential
Monoarthritis - Differential Diagnosis
Infection (Acute):
 - S. aureus (most common)
 - S. pneumonia
 - Salmonella (in
Monoarthritis - Differential ... Diagnosis Infection ... Infection (Chronic ... disease Fungal: - Histoplasmosis ... Monoarthritis #Differential
MIAMI Mnemonic for Differential Diagnosis of Lymphadenopathy
Malignancies
 - Kaposi sarcoma, leukemias, lymphomas, metastases, skin neoplasms
Infections
 -
MIAMI Mnemonic for Differential ... skin neoplasms Infections ... chancroid, cutaneous infections ... cryptococcosis, histoplasmosis ... MIAMI #Mnemonic #Differential
Causes of Hypercalcemia
Hypercalcemia due to increased bone Ca2+ resorption:
 • Primary hyperparathyroidism, Malignancy, Pseudohyperparathyroidism, Renal failure,
coccidioidomycosis, histoplasmosis ... Hypercalcemia #Causes #differential ... calcium #high #endocrinology
Generalized Weakness - Differential Diagnosis Framework
"l feel weak":
 • Infectious: Influenza, EBV, PNA, Bacteremia, Sepsis
 •
Generalized Weakness - Differential ... feel weak": • Infectious ... ↓, Malignancy, Infection ... Generalized #Weakness #Differential ... Diagnosis #causes #neurology
Causes of Culture Negative Abscess - Differential Diagnosis Framework
Consider prior antibiotics as a cause of a
Negative Abscess - Differential ... Dracunculiasis - Non-Infectious ... Blastomycosis - Non-Infectious ... : Aspergillus, histoplasmosis ... Mucormycosis, histoplasmosis
Causes of Proximal Muscle Weakness That May Mimic Inflammatory Myopathy
 • Central or peripheral neurologic disease
or peripheral neurologic ... Sarcoidosis • Infections ... mimics #diagnosis #differential ... #causes #neurology