11 results
Tree-in-Bud Sign on Chest CT
 • Multiple centrilobular nodules arranged in a linear branching pattern.
 •
Tree-in-Bud Sign ... on Chest CT • ... linear branching pattern ... #CT #Lung #Pulmonary ... #clinical #tree
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
TB: Tree-in-bud ... #Radiology #Pulmonary ... #CTChest #Nodular ... #Differential # ... Comparison #Table
Miliary Pattern - Chest Radiology
 • Miliary opacities are scattered, small (1 -4 mm) nodules
 •
- Chest Radiology ... #Chest #Radiology ... diagnosis #pulmonary ... #CXR #clinical ... #CT
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
Lung Abscess - Clinical ... CT Lung Abscess ... Cavitation > 6 cm ... Differential Diagnosis ... #pulmonary #differential
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
In the differential ... without associated pulmonary ... #Clinical #Diagnosis ... #Radiology #CTChest ... Cyst #Emphysema #Comparison
Nontuberculous Mycobacteria (NTM) Infections 

Mycobacterial species other than those belonging to the Mycobacterium tuberculosis complex and
Bronchiectasis - Tree-in-bud ... Disease: Clinical ... Lung Disease: • Clinical ... Imaging, high res CT ... NTM #Infections #differential
CNS Infection in HIV / AIDS - Differential Diagnosis Framework

Principles of HIV-Associated CNS Opportunistic Infections:
 •
in HIV / AIDS - Differential ... should be based on clinical ... tuberculomas, or abscesses ... enhancement on CT ... - Generally >3 cm
On the left a smoker with RB-ILD with subtle HRCT-findings.
The dominant pattern is ground glass opacification.
Additional
The dominant pattern ... these non-specific CT ... there is a broad differential ... #Clinical #Radiology ... #CTChest #RBILD
Chronic hypersensitivity pneumonitis (2)
The case on the left shows an inspiratory and expiratory scan: the mosaic
Signs of fibrosis ... lower lung zones, but ... included in the differential ... #Clinical #Radiology ... #CTChest #Chronic
Authors: Mark M. Ramzy, DO, EMT-P (@MarkRamzyDO, EM Resident Physician, Drexel University, Department of Emergency Medicine)
(@MarkRamzyDO, EM ... Hamilton, MD (EM ... Vital signs: BP ... radiograph pattern ... #Radiology #CTChest