13 results
Mosaic Attenuation on Chest CT
 • Variable attenuation seen on a chest CT in a lobular
CT • Variable ... BO, CTEPH, PJP, CEP ... , HP, COP https ... #Lung #Pulmonary ... #diagnosis #radiology
Pulmonary Renal Syndrome

Definition: Diffuse alveolar hemorrhage + Glomerulonephritis
Presentation (Pulmonary and renal manifestations can occur weeks apart):
Pulmonary Renal ... for Pulmonary Renal ... , C3, C4, anti-CCP ... high resolution chest ... CT • Bronchoscopy
Atoll Sign (Reverse-Halo Sign) on Chest CT
 • Central GGO surrounded by a crescentic or circumferential
CT • Central GGO ... consolidation • DDx: COP ... Reverse #Halo #Sign #CT ... #Lung #Pulmonary ... #diagnosis #radiology
Pulmonary Renal Syndromes - OnePager Summary
Autoimmune ANCA vasculitis (AAV): GPA (granulomatous with polyangiitis), EGPA (eosinophilic granulomatosis
Pulmonary Renal ... Other tests: • CT ... o infection • Echocardiogram ... sparing of the lung ... CT
Pulmonary Infections in HIV-AIDS
Bacterial: 
 • No organism identified, Strep pneumoniae, H. influenzae, S.aureus, Streptococcus Grp
heart failure, COPD ... , Lung cancer, Primary ... +/- High res CT ... chest scan), CBC ... HIVAIDS #workup #diagnosis
Miliary Pattern - Chest Radiology
 • Miliary opacities are scattered, small (1 -4 mm) nodules
 •
throughout the lungs ... Differential Diagnosis ... thyroid, melanoma, renal ... #pulmonary #CXR ... #clinical #CT
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
Physical stigmata of cor ... in the adjacent lung ... of the affected lung ... CT) • Broncho-arterial ... Laboratory: • ANA, RF, CCP
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
Lung Abscess - Diagnosis ... necrosis (7-14 days later ... Blood cultures • CXR ... CT Lung Abscess ... #Abscess #pulmonary
It is very important to differentiate between acute consolidation and chronic consolidation, because it will limit
the differential diagnosis ... - Lung neoplasms ... organizing pneumonia (OP ... proteinaceous material ... #Pulmonary #CXR
Based on the images alone, it is usually not possible to determine the cause of the
between these chest ... Organizing pneumonia (OP ... nodular interstitial lung ... #Clinical #Diagnosis ... #Radiology #CXR