12 results
Concurrent Brain and Lung Lesions
 • Bacteria: Nocardia spp, Strep anginosus, Staph aureus, Klebsiella pneumoniae (hypervirulent),
Concurrent Brain ... and Lung Lesions ... ) • Fungi: Aspergillus ... Mucormycosis, Cryptococcus ... #Lung #Infections
Concurrent Brain and Lung Lesions
 • Bacteria: Nocardia spp, Strep anginosus, Staph aureus, Klebsiella pneumoniae (hypervirulent),
Concurrent Brain ... and Lung Lesions ... ) • Fungi: Aspergillus ... Mucormycosis, Cryptococcus ... #Lung #Infections
Causes of Culture Negative Abscess - Differential Diagnosis Framework
Consider prior antibiotics as a cause of a
negative culture Brain ... Mycobacteria - Fungal: Aspergillus ... , Cryptococcus, ... nocardia - Fungal: Cryptococcus ... Coccidiomycosis, Cryptococcus
Differential Diagnosis for Concurrent Brain and Lung Infections
 • Bacteria: Strep anginosus, Staph aureus, Klebsiella pneumoniae
Diagnosis for Concurrent ... Brain and Lung ... Mucormycosis, Cryptococcus ... @ID_fellows #Brain ... #Lung #Infections
Fungal Biomarkers: Beta-D-Glucan and Aspergillus Galactomannan
Beta-D-Glucan:
 • Polysaccharide cell wall component of many fungi
 • Pathogens:
Beta-D-Glucan and Aspergillus ... - Negative: Cryptococcus ... Paecilomyces, Cryptococcus ... decreased with: concurrent ... Clav (may be + as long
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
lesions • 80% with lung ... histoplasmosis, cryptococcus ... , and aspergillus ... RingEnhancing #Lesions #Brain
Pulmonary Infections in HIV-AIDS
Bacterial: 
 • No organism identified, Strep pneumoniae, H. influenzae, S.aureus, Streptococcus Grp
CD4 < 200: PCP, Aspergillus ... (Histoplasma, Cryptococcus ... failure, COPD, Lung ... ABG, BDG, Serum Cryptococcal
Radiographic appearances of pulmonary diseases in HIV/AIDS Patients
 • Diffuse Interstitial Infiltrates: Pneumocystis jirovecii, M.tuberculosis, Histoplasma
Coccidioides spp., Cryptococcus ... C.neoformans, Aspergillus ... Actinomyces spp., NHL; Lung ... C.neoformans, R.equi, Aspergillus
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
Lung Infections ... pneumonia (PJP), MAI, Cryptococcal ... since cART) Aspergillus ... nodules, plaques) Cryptococcus ... cough, myalgia • Lung
Mycoses

HISTOPLASMOSIS
• Inhalation of conidia → Yeast → travel to lymph nodes → spread in body
• Bird
Fluconazole CRYPTOCOCCUS ... level, presence of cryptococcal ... CSF and serum Cryptococcal ... ASPERGILLOSIS • Aspergillus ... • Sinusitis • Brain