15 results
COVID-19 Patterns of Lung Findings on Chest CT
1. Reverse Halo Sign
2. ARDS
3. Crazy-Paving Pattern
4. Bilateral Peripheral
CT 1. ... ARDS 3. ... Consolidation 7. ... Patterns #Lung #Pulmonary ... #diagnosis
Pulmonary Infections in HIV-AIDS
Bacterial: 
 • No organism identified, Strep pneumoniae, H. influenzae, S.aureus, Streptococcus Grp
in HIV-AIDS Bacterial ... Evaluation: Imaging (CXR ... +/- High res CT ... chest scan), CBC ... HIVAIDS #workup #diagnosis
TRALI vs TACO - Transfusion Reactions
TRALI:
 • Epidemiology: 0.1% of transfused patientsl
 • Risk factors: Critical
: Age>60, CKD, CHF ... fluid balance, and CXR ... with pulmonary ... Reactions #hematology #diagnosis ... #comparison #table
Pulmonary Renal Syndrome

Definition: Diffuse alveolar hemorrhage + Glomerulonephritis
Presentation (Pulmonary and renal manifestations can occur weeks apart):
Differential Diagnosis ... anti-GBM ab, ANA, C3, C4 ... , anti-CCP • CXR ... high resolution chest ... CT • Bronchoscopy
CNS Infection in HIV / AIDS - Differential Diagnosis Framework

Principles of HIV-Associated CNS Opportunistic Infections:
 •
Infection in HIV / AIDS ... - Differential Diagnosis ... cells per μL • Diagnosis ... Antimicrobial treatment ... enhancement on CT
Pulmonary Renal Syndromes - OnePager Summary
Autoimmune ANCA vasculitis (AAV): GPA (granulomatous with polyangiitis), EGPA (eosinophilic granulomatosis
Other tests: • CT ... chest to evaluate ... ground glass or consolidative ... CT ... #management #treatment
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
- Differential Diagnosis ... • CT: Halo sign ... dyspnea • Lobar consolidation ... Infections #HIV #AIDS ... #pulmonary #differential
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
Blood cultures • CXR ... early disease) • CXR ... CT Lung Abscess ... hemorrhage • Treatment ... Lung #Abscess #pulmonary
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
centrilobular nodules, or consolidation ... parenchyma Diagnosis ... CT) • Broncho-arterial ... mycobacteria Treatment ... #differential #diagnosis
Mycoses

HISTOPLASMOSIS
• Inhalation of conidia → Yeast → travel to lymph nodes → spread in body
• Bird
Histoplasmosis Diagnosis ... aches, joint pain, chest ... yeast • At risk: AIDS ... MC: CNS CSF: • ... India ink prep CSF