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Here are the most common examples of these four patterns on a chest x-ray (click image
patterns on a chest ... opacities - Fine Nodular ... mass - Solitary Pulmonary ... Atelectasis #Diagnosis #Clinical ... #Radiology #CXR
Pulmonary Tuberculosis - Patterns of Involvement
 • Scarring, Nodules and Consolidation
    - Lobar
Pulmonary Tuberculosis ... Inhomogeneous patchy nodular ... #TB #Patterns #chest ... #xray #clinical ... #radiology #CXR
Based on the images alone, it is usually not possible to determine the cause of the
chronic illness, clinical ... between these chest ... in fact this is nodular ... interstitial lung ... #Radiology #CXR
Feeding Vessel Sign on Chest CT
 • Distinct pulmonary vessel leading into a lung nodule or
Vessel Sign on Chest ... CT • Distinct pulmonary ... nodule or mass ... #Pulmonary #diagnosis ... #radiology #clinical
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
diseases with a nodular ... histiocytosis: early nodular ... #Clinical #Diagnosis ... #Radiology #Pulmonary ... #CTChest #Nodular
Air Crescent Sign on Chest CT
 • Crescentic or circumferential rim of radiolucent airspace within a
a parenchymal consolidation ... or nodular opacity ... Crescent #Sign #CT #Lung ... #Pulmonary #diagnosis ... #radiology #clinical
Tree-in-bud
In centrilobular nodules the recognition of 'tree-in-bud' is of value for narrowing the differential diagnosis.
Tree-in-bud describes
centrilobular nodules ... irregular and often nodular ... identified in the lung ... Diagnosis #Pathophys #Radiology ... #Pulmonary #CTChest
Etiologies of pulmonary infections according to CT-scan patterns. 
CMV cytomegalovirus, GM galactomannan, HSV herpes simplex virus,
Etiologies of pulmonary ... Varicella–Zoster virus NODULAR ... aureus) EXCAVATED NODULES ... Aspergillosis CONSOLIDATION ... #Lung #Infections
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
Organizing Pneumonia - Clinical ... irregular lines, nodular ... • HRCT: patchy consolidation ... zone, GGO, small modular ... Severe/ failure steroids
Septic emboli
Septic emboli usually present as multiple ill-defined nodules.
In about 50% cavitation is seen.
CT demonstrates more
multiple ill-defined nodules ... in the proper clinical ... the ill-defined nodules ... which are probably consolidations ... #Clinical #Radiology