70 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
Monoarthritis - Differential Diagnosis
Infection (Acute):
 - S. aureus (most common)
 - S. pneumonia
 - Salmonella (in
Monoarthritis - Differential ... Diagnosis Infection ... Infection (Chronic ... disease Fungal: - Histoplasmosis ... Monoarthritis #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 ... diagnosis #causes #radiology
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
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
Skin Ulcers by Etiology - Differential Diagnosis Algorithm
Physical:
 • Trauma
 • Pressure
 • Radiation
Vascular:
 • Arterial
by Etiology - Differential ... Cryoglobulinemia Infectious ... Fungal • Histoplasmosis ... #dermatology #Differential
Fever in Returning Travelers from Tropical Regions - Frequent Differential Diagnoses
Medical History:
 • Skin exposure to
Regions - Frequent Differential ... B, hepatitis C infection ... hepatitis B and C infection ... tuberculosis, American histoplasmosis ... Returning #Traveler #differential
Bone Tumor Location within the Skeleton

Epiphysis: 
Only a few lesions are located in the epiphysis, so
chondroblastoma or an infection ... included in the differential ... Enchondroma and infections ... Diaphysis #Epiphysis #Radiology ... #MSK #Differential