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Vascular Dilatation or Inflammation
Ryan K. L. Lee, MBChB, FRCR, FHKAM (Radiology); James F. Griffith, MD, MRCP, FRCR
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KEY FACTS

  • Imaging

    • Diagnostic Checklist

      TERMINOLOGY

      • Synonyms

        • Intravascular papillary endothelial hyperplasia: Masson tumor, Masson pseudoangiosarcoma, intravascular angiomatosis, vegetant intravascular hemangioendothelioma
        • Pseudoaneurysm: False aneurysm
      • Definitions

        • Intravascular papillary endothelial hyperplasia
          • Organizing thrombus with excessive reactive papillary endothelial proliferation
        • Superficial thrombophlebitis
          • Inflammation of superficial vein
        • Venous varix
          • Focal dilatation of vein
        • Intravascular organized hematoma
          • Organized hematoma within vessel, usually vein
        • Pseudoaneurysm
          • Luminal outpouching of artery with
            • Defect in tunica intima and media and preservation of tunica adventitia; or
            • Full-thickness wall defect with bleeding contained by hematoma and surrounding soft tissues
        • Kimura disease
          • Inflammatory response associated with self-limiting allergic or autoimmune reaction to unknown stimulus

      IMAGING

      • General Features

        • Ultrasonographic Findings

          • CT Findings

            • MR Findings

              • Imaging Recommendations

                DIFFERENTIAL DIAGNOSIS

                  PATHOLOGY

                  • General Features

                    • Microscopic Features

                      CLINICAL ISSUES

                      • Presentation

                        • Demographics

                          • Treatment

                            DIAGNOSTIC CHECKLIST

                            • Consider

                              Selected References

                              1. Paunipagar BK et al: Intravascular papillary endothelial hyperplasia: report of two cases. Acta Radiol. 52(5):499-502, 2011
                              2. Lee SJ et al: Imaging findings of intravascular papillary endothelial hyperplasia presenting in extremities: correlation with pathological findings. Skeletal Radiol. 39(8):783-9, 2010
                              Related Anatomy
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                              Related Differential Diagnoses
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                              References
                              Tables

                              Tables

                              KEY FACTS

                              • Imaging

                                • Diagnostic Checklist

                                  TERMINOLOGY

                                  • Synonyms

                                    • Intravascular papillary endothelial hyperplasia: Masson tumor, Masson pseudoangiosarcoma, intravascular angiomatosis, vegetant intravascular hemangioendothelioma
                                    • Pseudoaneurysm: False aneurysm
                                  • Definitions

                                    • Intravascular papillary endothelial hyperplasia
                                      • Organizing thrombus with excessive reactive papillary endothelial proliferation
                                    • Superficial thrombophlebitis
                                      • Inflammation of superficial vein
                                    • Venous varix
                                      • Focal dilatation of vein
                                    • Intravascular organized hematoma
                                      • Organized hematoma within vessel, usually vein
                                    • Pseudoaneurysm
                                      • Luminal outpouching of artery with
                                        • Defect in tunica intima and media and preservation of tunica adventitia; or
                                        • Full-thickness wall defect with bleeding contained by hematoma and surrounding soft tissues
                                    • Kimura disease
                                      • Inflammatory response associated with self-limiting allergic or autoimmune reaction to unknown stimulus

                                  IMAGING

                                  • General Features

                                    • Ultrasonographic Findings

                                      • CT Findings

                                        • MR Findings

                                          • Imaging Recommendations

                                            DIFFERENTIAL DIAGNOSIS

                                              PATHOLOGY

                                              • General Features

                                                • Microscopic Features

                                                  CLINICAL ISSUES

                                                  • Presentation

                                                    • Demographics

                                                      • Treatment

                                                        DIAGNOSTIC CHECKLIST

                                                        • Consider

                                                          Selected References

                                                          1. Paunipagar BK et al: Intravascular papillary endothelial hyperplasia: report of two cases. Acta Radiol. 52(5):499-502, 2011
                                                          2. Lee SJ et al: Imaging findings of intravascular papillary endothelial hyperplasia presenting in extremities: correlation with pathological findings. Skeletal Radiol. 39(8):783-9, 2010