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Chest
Differential Diagnosis
Lungs and Airspaces
Modality-Specific Imaging Findings: Computed Tomography
Air Crescent Sign
Air Crescent Sign
Tomás Franquet, MD, PhD
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DIFFERENTIAL DIAGNOSIS

    ESSENTIAL INFORMATION

    • Key Differential Diagnosis Issues

      • Helpful Clues for Common Diagnoses

        • Helpful Clues for Less Common Diagnoses

          • Helpful Clues for Rare Diagnoses

            Selected References

            1. Shroff GS et al: CT signs in the lungs. Semin Ultrasound CT MR. 40(3):265-74, 2019
            2. Sevilha JB et al: Infectious and non-infectious diseases causing the air crescent sign: A State-of-the-Art Review. Lung. 196(1):1-10, 2018
            3. Hansell DM et al: Fleischner Society: glossary of terms for thoracic imaging. Radiology. 246(3):697-722, 2008
            4. Franquet T et al: Spectrum of pulmonary aspergillosis: histologic, clinical, and radiologic findings. Radiographics. 21(4):825-37, 2001
            Related Anatomy
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            References
            Tables

            Tables

            DIFFERENTIAL DIAGNOSIS

              ESSENTIAL INFORMATION

              • Key Differential Diagnosis Issues

                • Helpful Clues for Common Diagnoses

                  • Helpful Clues for Less Common Diagnoses

                    • Helpful Clues for Rare Diagnoses

                      Selected References

                      1. Shroff GS et al: CT signs in the lungs. Semin Ultrasound CT MR. 40(3):265-74, 2019
                      2. Sevilha JB et al: Infectious and non-infectious diseases causing the air crescent sign: A State-of-the-Art Review. Lung. 196(1):1-10, 2018
                      3. Hansell DM et al: Fleischner Society: glossary of terms for thoracic imaging. Radiology. 246(3):697-722, 2008
                      4. Franquet T et al: Spectrum of pulmonary aspergillosis: histologic, clinical, and radiologic findings. Radiographics. 21(4):825-37, 2001