9 results
COVID-19 Patterns of Lung Findings on Chest CT
1. Reverse Halo Sign
2. ARDS
3. Crazy-Paving Pattern
4. Bilateral Peripheral
CT 1. ... Consolidation 7. ... #Pulmonary #ChestCT ... #radiology #CTChest ... #diagnosis
Atoll Sign (Reverse-Halo Sign) on Chest CT
 • Central GGO surrounded by a crescentic or circumferential
surrounded by a crescentic ... circumferential denser consolidation ... #Sign #CT #Lung ... #Pulmonary #diagnosis ... #radiology #clinical
Air Crescent Sign on Chest CT
 • Crescentic or circumferential rim of radiolucent airspace within a
on Chest CT • ... a parenchymal consolidation ... #Sign #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
present as multiple ... CT demonstrates ... can suggest the diagnosis ... which are probably consolidations ... #Clinical #Radiology
Lung infarction
The radiographic features of acute pulmonary thromboembolism are insensitive and nonspecific.
The most common radiographic findings
Embolism Diagnosis ... emboli the chest ... x-ray is normal ... The peripheral consolidation ... #Clinical #Radiology
Pulmonary Renal Syndromes - OnePager Summary
Autoimmune ANCA vasculitis (AAV): GPA (granulomatous with polyangiitis), EGPA (eosinophilic granulomatosis
Other tests: • CT ... DAN) • EMG/NCS ... ground glass or consolidative ... sparing of the lung ... CT
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
- Differential Diagnosis ... pain may be present ... • CT: Halo sign ... dyspnea • Lobar consolidation ... Infections #HIV #AIDS #pulmonary
Amiodarone Induced Lung Toxicity Summary

Who?
• 5% of patients
• Dose ≥ 400 mg per day

How?  Possible
Amiodarone Induced Lung ... Direct cytotoxic lung ... • Amiodarone half ... • Can rarely present ... embolism -
Preoperative Risk Evaluation

Major Pre-Op Questions:
1. Does the patient have any modifiable risk factors that could be
indicated • EKG ... Obtain EKG if: ... X-ray: • Not ... unless prior heart/lung ... stratification #diagnosis