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Pediatrics
Diagnosis
Airway
Normal Dynamic Airway Findings in Infants
Pseudothickening of Retropharyngeal Tissues
Pseudothickening of Retropharyngeal Tissues
A. Carlson Merrow, Jr., MD, FAAP; Lane F. Donnelly, MD
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Clinical Issues

          TERMINOLOGY

          • Definitions

            • Transient thickening of normal retropharyngeal soft tissues of infant on lateral airway radiograph
              • Redundant prevertebral tissues "swell" with expiration or poor extension
              • Appearance resolves with inspiration & adequate extension
            • Contributing factors to this appearance include
              • Relatively short necks of infants & young children lead to poor positioning for airway radiographs
              • Relatively long expiratory component of crying also challenges acquisition during maximal inspiration

          IMAGING

          • Radiographic Findings

            • Imaging Recommendations

              DIFFERENTIAL DIAGNOSIS

                CLINICAL ISSUES

                • Presentation

                  • Demographics

                    Selected References

                    1. Donnelly LF. Airway. In: Fundamentals of Pediatric Imaging. Philadelphia: Elsevier Science Health Science, 2016
                    2. Darras KE et al: Imaging Acute Airway Obstruction in Infants and Children. Radiographics. 35(7):2064-79, 2015
                    Related Anatomy
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                    Related Differential Diagnoses
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                    References
                    Tables

                    Tables

                    KEY FACTS

                    • Terminology

                      • Imaging

                        • Top Differential Diagnoses

                          • Clinical Issues

                            TERMINOLOGY

                            • Definitions

                              • Transient thickening of normal retropharyngeal soft tissues of infant on lateral airway radiograph
                                • Redundant prevertebral tissues "swell" with expiration or poor extension
                                • Appearance resolves with inspiration & adequate extension
                              • Contributing factors to this appearance include
                                • Relatively short necks of infants & young children lead to poor positioning for airway radiographs
                                • Relatively long expiratory component of crying also challenges acquisition during maximal inspiration

                            IMAGING

                            • Radiographic Findings

                              • Imaging Recommendations

                                DIFFERENTIAL DIAGNOSIS

                                  CLINICAL ISSUES

                                  • Presentation

                                    • Demographics

                                      Selected References

                                      1. Donnelly LF. Airway. In: Fundamentals of Pediatric Imaging. Philadelphia: Elsevier Science Health Science, 2016
                                      2. Darras KE et al: Imaging Acute Airway Obstruction in Infants and Children. Radiographics. 35(7):2064-79, 2015
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