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Skin cancer is a type of cancer that occurs when there is an abnormal growth of skin cells, usually triggered by damage to the DNA within the skin cells. It is primarily caused by exposure to ultraviolet (UV) radiation from the sun or artificial sources like tanning beds. Skin cancer is the most common type of cancer worldwide, and its incidence continues to rise.
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Dermis
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Related Experiment Video

Updated: Apr 29, 2026

Dermoscopy Aids in the Diagnosis of Discoid Lupus Erythematosus
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[Superimposed lichen planus pigmentosus].

Benigno Monteagudo1, Óscar Suarez-Amor, Miguel Cabanillas

  • 1Complejo Hospitalario Universitario de Ferrol.

Dermatology Online Journal
|May 24, 2014
PubMed
Summary

Lichen planus pigmentosus, an uncommon variant of lichen planus, presents with dark macules. This case highlights a rare superimposed linear form with pronounced segmental lesions.

Area of Science:

  • Dermatology
  • Clinical Case Study

Background:

  • Lichen planus pigmentosus is a rare variant of lichen planus.
  • Superimposed linear lichen planus is an exceedingly rare condition.

Observation:

  • A 39-year-old woman presented with a unique case.
  • She exhibited both segmental and linear lichen planus lesions.
  • Non-segmental lesions consistent with superimposed linear lichen planus pigmentosus were also present.

Findings:

  • The patient's condition met diagnostic criteria for superimposed linear lichen planus pigmentosus.
  • Segmental lesions were notably more pronounced than other manifestations.
  • This case represents an extremely rare presentation of the disorder.

Implications:

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  • This case expands the understanding of lichen planus pigmentosus variants.
  • It underscores the importance of recognizing rare dermatological presentations.
  • Further research into the pathogenesis and treatment of superimposed linear lichen planus pigmentosus is warranted.