Radiopaedia 2021 UPDATE Conference-only registration is now closed. Late registration for All-Access Pass and Free Country Pass holders ends this Friday - LEARN MORE


Dengue is a mosquito-borne acute systemic viral infection caused by any of the four serotypes of the dengue virus.

Dengue virus infections occur predominately in tropical and subtropical regions. 3 

The infection can lead to a broad spectrum of symptoms ranging from mild, nonspecific, influenza-like prodromes called dengue fever to more severe forms known as:

  • dengue hemorrhagic fever
  • dengue shock syndrome 

The dengue viruses (DENV) are single-stranded RNA arboviruses that are divided into four different serotypes, nominated DENV-1, -2, -3, and -4. They belong to the family Flaviviridae and the genus Flavivirus.

Although radiology does not play an active role in the diagnosis of dengue fever or in the assessment of mild cases, it can show typical findings related to plasma leakage and in abscence of serological tests, those features could play a diagnostic role2. Findings include2,4:

  • hepatomegaly
  • splenomegaly
  • pleural effusions (right-sided more common than bilateral or left-sided)
  • diffuse edema of the gallbladder wall
  • abdominal free fluid (ascites).

    Article information

    rID: 54826
    Synonyms or Alternate Spellings:

    ADVERTISEMENT: Supporters see fewer/no ads

    Updating… Please wait.

     Unable to process the form. Check for errors and try again.

     Thank you for updating your details.