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Sonographic findings in scabies.

M Dominguez-Santas1, G Roustan-Gullon2, F Alfageme-Roldan2

  • 1Dermatology Department, Ramon y Cajal University Hospital, Carretera Colmenar Viejo km 9.100, 28034, Madrid, Spain. miguelds92@hotmail.com.

Journal of Ultrasound
|August 26, 2022
PubMed
Summary

Scabies, a skin infestation by Sarcoptes scabiei mites, can now be visualized using ultrasound. This imaging technique identifies adult mites and eggs within burrows, aiding diagnosis.

Keywords:
DermatologyScabiesUltrasound

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Area of Science:

  • Dermatology
  • Medical Imaging
  • Parasitology

Background:

  • Scabies is a contagious skin infestation caused by the mite Sarcoptes scabiei var. hominis.
  • Diagnosis often relies on clinical presentation and microscopic identification of mites, burrows, or ova.
  • Non-invasive diagnostic tools are continually being explored to improve detection rates.

Observation:

  • This case report presents sonographic findings in scabies infestations.
  • Ultrasound imaging revealed characteristic patterns associated with Sarcoptes scabiei.
  • Specific echogenic signatures were observed for adult mites and their eggs within epidermal burrows.

Findings:

  • Adult Sarcoptes scabiei mites appeared as hyperechoic, well-defined ovoid areas at the termination of hypoechoic burrows.
  • Scabies eggs were visualized as small heteroechoic dots distributed along the burrows.
  • Sonography demonstrated the potential to distinguish between burrows with and without active mite presence.

Implications:

  • Ultrasound may offer a valuable, non-invasive method for diagnosing scabies.
  • Sonographic visualization could aid in differentiating active vs. inactive scabetic lesions.
  • This imaging modality may assist in confirming scabies infestation, especially in challenging cases.