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Related Experiment Videos

Multiple pseudolymphomas caused by Hirudo medicinalis therapy.

J Smolle1, L Cerroni, H Kerl

  • 1Department of Dermatology, University of Graz, Austria.

Journal of the American Academy of Dermatology
|October 26, 2000
PubMed
Summary

Medicinal leech therapy, used in plastic surgery and venous insufficiency, can cause skin reactions. A patient developed follicular pseudolymphomas at leech application sites on their legs.

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Area of Science:

  • Dermatology
  • Pathology
  • Medical Entomology

Background:

  • Medicinal leech therapy (Hirudo medicinalis) is increasingly utilized in reconstructive surgery and for managing chronic venous insufficiency.
  • Leech therapy involves the application of leeches to the skin for therapeutic purposes.

Observation:

  • A patient presented with firm, brown-red, pea-sized papules at multiple sites of leech application on the lower legs.
  • The lesions were observed following routine leech therapy.

Findings:

  • Histological examination revealed characteristic features of pseudolymphoma.
  • Immunohistological and molecular analyses confirmed T-cell receptor and immunoglobulin gene rearrangements.
  • The observed lesions were definitively diagnosed as follicular pseudolymphomas.

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Implications:

  • This case highlights a rare cutaneous reaction to medicinal leech therapy.
  • Understanding this adverse effect is crucial for clinicians managing patients undergoing leech therapy.
  • Further research may be needed to elucidate the pathogenesis of pseudolymphoma in this context.