23 results
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
• Pleuritic CP ... • CT: Halo sign ... : • Risk: Can ... 100% of cases), anemia ... Infections #HIV #AIDS #pulmonary
There is a hydropneumothorax.
Notice the air-fluid level (blue arrow).
The upper lobe is still attached to the
Notice the air-fluid ... attached to the chest ... So we can assume ... airways leading to pulmonary ... #Clinical #Radiology
Monod Sign on Chest CT
 • Air surrounding a fungal ball in a preexisting pulmonary cavity
Monod Sign on Chest ... CT • Air surrounding ... #CT #Lung #Pulmonary ... #diagnosis #radiology ... #clinical
Air Bronchogram Sign on Chest CT
 • Patent airways surrounded by opacified lung
 • DDx: pna,
Sign on Chest CT ... infarction, pulm adeno Ca ... #CT #Lung #Pulmonary ... #diagnosis #radiology ... #clinical
Septic emboli
Septic emboli usually present as multiple ill-defined nodules.
In about 50% cavitation is seen.
CT demonstrates more
film and can suggest ... abutting the pleura, air-bronchograms ... feeding vessel sign ... #Clinical #Radiology ... #CXR #CTChest #
Community Acquired Pneumonia (CAP) - Diagnosis and Management

Pneumonia Signs/Symptoms:
 • Confusion/disorientation (LR + 1.9)
 • Cough
Pneumonia (CAP) ... Signs/Symptoms: ... aeruginosa Clinical ... Management #treatment #Pulmonary ... #Community #Acquired
Air Crescent Sign on Chest CT
 • Crescentic or circumferential rim of radiolucent airspace within a
Air Crescent Sign ... , bronchogenic Ca ... #CT #Lung #Pulmonary ... #diagnosis #radiology ... #clinical
Differential diagnosis of the reversed halo sign (RHS). AIA, angioinvasive aspergillosis; AIS, adenocarcinoma in situ; COP,
reversed halo sign ... adenocarcinoma in situ; COP ... ; PZ, pulmonary ... patients with acquired ... #Radiology #RHS
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
for Klebsiella pneumonia ... Lung Abscess - Clinical ... Leukocytosis, anemia ... lat decubitus - air ... #Abscess #pulmonary
Palpable Skin Crepitus on Physical Exam

Notice these air bubbles under the skin. An 86-year-old woman with
been treated for pneumonia ... complicated by pneumothorax ... pneumoretroperitoneum, and pneumothorax ... under the skin as long ... #PhysicalExam #Clinical