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COVID-19 Patterns of Lung Findings on Chest CT
1. Reverse Halo Sign
2. ARDS
3. Crazy-Paving Pattern
4. Bilateral Peripheral
of Lung Findings ... on Chest CT 1. ... #Lung #Pulmonary ... #ChestCT #radiology ... #CTChest #diagnosis
Miliary Pattern - Chest Radiology
 • Miliary opacities are scattered, small (1 -4 mm) nodules
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- Chest Radiology ... throughout the lungs ... Strongy, schisto • Malignancy ... #Chest #Radiology ... CXR #clinical #CT
Cheerio Sign (Open Bronchus Sign) on Chest CT
 • Pulmonary nodule with a central lucency
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Bronchus Sign) on Chest ... CT • Pulmonary ... and metastatic lung ... malignancy, rheumatoid ... #diagnosis #radiology
Tree-in-Bud Sign on Chest CT
 • Multiple centrilobular nodules arranged in a linear branching pattern.
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Tree-in-Bud Sign on Chest ... CT • Multiple ... linear branching pattern ... #Lung #Pulmonary ... #diagnosis #radiology
Crazy Paving on Chest CT
 • Thickened interlobular septa in a background of diffuse GGO's.
 •
Crazy Paving on Chest ... CT • Thickened ... lymphangitic spread of malignancy ... #Lung #Pulmonary ... #diagnosis #radiology
Split Pleura Sign on Chest CT
 • Contrast enhancement of the parietal and visceral pleura, separated
Pleura Sign on Chest ... CT • Contrast ... DDx: Empyema, malignant ... #Lung #Pulmonary ... #diagnosis #radiology
Pulmonary Renal Syndromes - OnePager Summary
Autoimmune ANCA vasculitis (AAV): GPA (granulomatous with polyangiitis), EGPA (eosinophilic granulomatosis
mononeuritis multiplex WORKUP ... Other tests: • CT ... sparing of the lung ... CT ... • IF staining patterns
Fleischner Society recommendations for follow-up of nodules
Previous chest radiographs should be reviewed to determine if the
nodules Previous chest ... with a benign pattern ... probability of malignancy ... definitive tissue diagnosis ... #Management #Radiology
Summary of Oncologic Emergencies

Neutropenic fever:
- Fever + ANC < 500 → start cefepime ± vancomycin (if
suspected) - CT ... chest; CT abdomen ... full infectious work-up ... Hypercalcemia of malignancy ... Oncology #HemeOnc #Diagnosis
Authors: Mark M. Ramzy, DO, EMT-P (@MarkRamzyDO, EM Resident Physician, Drexel University, Department of Emergency Medicine)
This post will focus ... trauma are diagnosed ... radiograph pattern ... #Radiology #CTChest ... #Lung #Pulmonary