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Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
Lung Abscess - Diagnosis ... polymicrobial infection ... pneumonia • DM risk ... CT Lung Abscess ... Prevotella • Fungal
Mycoses

HISTOPLASMOSIS
• Inhalation of conidia → Yeast → travel to lymph nodes → spread in body
• Bird
duration is 6 to 12 ... MUCORMYCOSIS • Risk ... Pulmonary 3) Abdominal ... fumigatus, A. flavus ... change in the lungs
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
Lung Infections ... Pseudomonas FUNGAL ... • CT: Halo sign ... Pneumonia: • Risk ... lymphadenopathy, • Abdominal
Nontuberculous Mycobacteria (NTM) Infections 

Mycobacterial species other than those belonging to the Mycobacterium tuberculosis complex and
Food products Risk ... status NTM Cause ... enzymes, diarrhea, abdominal ... • Dyspnea, • Chest ... Imaging, high res CT
Summary of Oncologic Emergencies

Neutropenic fever:
- Fever + ANC < 500 → start cefepime ± vancomycin (if
chest; CT abdomen ... if abdominal pain ... > 4 days → add fungal ... Treat underlying cause ... interventional radiology
Authors: Mark M. Ramzy, DO, EMT-P (@MarkRamzyDO, EM Resident Physician, Drexel University, Department of Emergency Medicine)
This post will focus ... consider intra-abdominal ... Most commonly caused ... #Radiology #CTChest ... #Lung #Pulmonary