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Perforating lichen nitidus

A Itami1, I Ando, A Kukita

  • 1Department of Dermatology, Teikyo University, Mizonokuchi Hospital, Kawasaki, Japan.

International Journal of Dermatology
|May 1, 1994
PubMed
Summary
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This study details a rare case of papules on the hand, diagnosed via histopathology. Findings revealed a unique epidermal perforation channel with lymphoid cell infiltration, suggesting a specific dermatological condition.

Area of Science:

  • Dermatopathology
  • Histopathology of skin lesions

Background:

  • A 32-year-old male presented with a 3-year history of asymptomatic papules on his left hand.
  • No significant family or past medical history was reported.

Observation:

  • Clinical examination revealed numerous discrete, flesh-colored papules on the dorsolateral aspects of the left hand and fingers.
  • No central dimpling or scaling was clinically apparent.

Findings:

  • Histopathology demonstrated a circumscribed epidermal infiltrate of mononuclear lymphoid cells and histiocytes.
  • A transepithelial perforation channel with amorphous debris and overlying lymphoid cells was observed.
  • Evidence of a basement membrane defect around the channel and downward rete ridge proliferation was noted.

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Implications:

  • The histopathological findings suggest a specific, possibly rare, dermatological condition characterized by epidermal perforation and inflammatory infiltrate.
  • Further investigation may be warranted to elucidate the exact nature and pathogenesis of this condition.