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Linear porokeratosis

Y Taniguchi¹, T Yuasa, M Shimizu

¹Department of Dermatology, Mie University School of Medicine, Tsu, Japan.

The Journal of Dermatology

|August 1, 1993

Summary

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A rare case of linear porokeratosis was documented in a 14-year-old girl. The skin condition presented with linear lesions following Blaschko's lines, confirmed by characteristic histological findings.

Area of Science:

Dermatology
Histopathology
Genetics

Background:

Linear porokeratosis is a rare dermatosis characterized by a linear distribution of lesions.
Its etiology is often linked to genetic mosaicism, potentially following lines of Blaschko.

Observation:

A 14-year-old female presented with a distinctive linear eruption on her right forearm extending to her breast.
The lesions exhibited a characteristic pattern consistent with Blaschko's lines.

Findings:

Histopathological examination revealed the hallmark cornoid lamellation in the stratum corneum.
Subjacent dyskeratotic cells within the spinous layer were also noted, confirming the diagnosis.

Implications:

This case highlights the importance of recognizing the clinical and histological features of linear porokeratosis.

Related Experiment Videos

Understanding the Blaschko linear distribution aids in diagnosing genetic mosaic conditions affecting the skin.