16 results
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
Differential diagnosis ... central dot. - LIP #Clinical ... #CTChest #Cystic ... #Differential #Comparison ... #Table #RadiologyAssistant
Halo Sign on Chest CT
 • SPN or mass surrounded by a circumferential GGO
 • DDx:
CTSPN or mass ... #Halo #Sign #CT ... #Lung #Pulmonary ... #diagnosis #radiology ... #clinical
On the left a patient who had a CT to rule out pulmonary embolism.
There is a
patient who had a CT ... The diagnosis based ... #Clinical #Radiology ... #CTChest #SeptalThickening ... #CHF #RadiologyAssistant
Septic emboli
Septic emboli usually present as multiple ill-defined nodules.
In about 50% cavitation is seen.
CT demonstrates more
CT demonstrates ... can suggest the diagnosis ... in the proper clinical ... #SepticEmboli #Cavity ... #RadiologyAssistant
Monod Sign on Chest CT
 • Air surrounding a fungal ball in a preexisting pulmonary cavity
CT • Air surrounding ... cavity • DDx: ... #Monod #Sign #CT ... #diagnosis #radiology ... #clinical
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
#Clinical #Diagnosis ... #Radiology #CTChest ... #Cavity #Cyst # ... Emphysema #Comparison ... #RadiologyAssistant
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
#Clinical #Diagnosis ... #Radiology #Pulmonary ... #CTChest #Nodular ... #Differential #Comparison ... #Table #RadiologyAssistant
Pulmonary Infections in HIV-AIDS
Bacterial: 
 • No organism identified, Strep pneumoniae, H. influenzae, S.aureus, Streptococcus Grp
Pulmonary Infections ... CXR +/- High res CT ... chest scan), CBC ... PCP DFA sputum, LDH ... HIVAIDS #workup #diagnosis
Corona Radiata (Sunburst sign) on Chest CT
 • SPN or mass, with spiculated and inegular margins
CTSPN or mass ... Sunburst #Sign #CT ... #Lung #Pulmonary ... #diagnosis #radiology ... #clinical
Cheerio Sign (Open Bronchus Sign) on Chest CT
 • Pulmonary nodule with a central lucency
 •
CTPulmonary ... Pulm adeno Ca, PLCH ... Cheerio #Sign #CT ... #diagnosis #radiology ... #clinical