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:
- pleural effusions (right-sided more common than bilateral or left-sided)
- diffuse edema of the gallbladder wall
- abdominal free fluid (ascites).
- 1. Gubler DJ. Dengue and dengue hemorrhagic fever. Clinical microbiology reviews. 11 (3): 480-96. Pubmed
- 2. Chandak S, Kumar A. Can Radiology Play a Role in Early Diagnosis of Dengue Fever?. North American journal of medical sciences. 8 (2): 100-5. doi:10.4103/1947-2714.177316 - Pubmed
- 3. Carmo RLD, Alves Simão AK, Amaral LLFD, Inada BSY, Silveira CF, Campos CMS, Freitas LF, Bonadio V, Marussi VHR. Neuroimaging of Emergent and Reemergent Infections. (2019) Radiographics : a review publication of the Radiological Society of North America, Inc. 39 (6): 1649-1671. doi:10.1148/rg.2019190020 - Pubmed
- 4. Santhosh VR, Patil PG, Srinath MG, Kumar A, Jain A, Archana M. Sonography in the diagnosis and assessment of dengue Fever. (2014) Journal of clinical imaging science. 4: 14. doi:10.4103/2156-7514.129260 - Pubmed