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Related Experiment Videos

Linear connective tissue nevus.

Yoshihide Asano1, Hironobu Ihn, Kunihiko Tamaki

  • 1Department of Dermatology, Faculty of Medicine, University of Tokyo, Tokyo, Japan. yasano-tky@umin.ac.jp

Pediatric Dermatology
|September 12, 2007
PubMed
Summary
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A rare variant of connective tissue nevus, zosteriform connective tissue nevus, presents in linear arrangements. This case study reports on an 8-year-old boy, proposing "linear connective tissue nevus" as a suitable diagnosis.

Area of Science:

  • Dermatology
  • Genetics
  • Pathology

Background:

  • Connective tissue nevi are benign hamartomas of dermal connective tissue.
  • Zosteriform connective tissue nevus is a rare variant characterized by linear arrangements.
  • Understanding the genetic and developmental basis of these nevi is crucial.

Observation:

  • An 8-year-old Japanese boy presented with multiple lesions following Blaschko's lines.
  • Lesions initially appeared on the ankle and lower leg, later spreading to the abdomen and forearm.
  • Biopsy revealed abnormalities in collagen and elastic fibers.

Findings:

  • The distribution along Blaschko's lines suggests a postzygotic mutation.
  • Histopathological examination confirmed connective tissue abnormalities.

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  • The clinical presentation aligns with a mosaic pattern of inheritance.

    • Implications:

    • Proposes "linear connective tissue nevus" as a more accurate diagnostic term.
    • Highlights the importance of considering Blaschko's lines in nevus diagnosis.
    • Contributes to understanding rare genodermatoses and their clinical manifestations.