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Skin Cancer

Skin Cancer

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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The first thing a clinician sees is the skin, so the examination of the skin should be part of any thorough physical examination. Most skin disorders are relatively benign, but a few, including melanomas, can be fatal if untreated. A couple of the more noticeable disorders, albinism and vitiligo, affect the appearance of the skin and its accessory organs.
Albinism
Albinism is a genetic disorder that affects (completely or partially) the coloring of skin, hair, and eyes. The defect is primarily...

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Related Experiment Video

Updated: Jun 17, 2026

Combining Reflectance Confocal Microscopy with Optical Coherence Tomography for Noninvasive Diagnosis of Skin Cancers via Image Acquisition

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Symmetrical bilateral Becker melanosis: A rare presentation.

Kelli D Grim¹, Carina A Wasko

¹Department of Dermatology, Baylor College of Medicine, Houston, Texas, USA.

Dermatology Online Journal

|December 31, 2009

Summary

Becker melanosis, a common skin condition, typically presents as a single-sided patch. This report details a rare case of bilateral, symmetrical Becker melanosis, offering insights into its causes and treatments.

Area of Science:

Dermatology
Clinical Case Reports
Genetics

Background:

Becker melanosis (BM), or Becker nevus, is a hamartoma characterized by unilateral hyperpigmentation and hypertrichosis.
BM typically appears in peripubertal individuals, usually as a solitary lesion.

Observation:

This report presents an exceptionally rare case of bilateral, symmetrical Becker melanosis.
The patient did not exhibit any associated syndromic features.

Findings:

The occurrence of bilateral, symmetrical BM is exceedingly uncommon.
The case contributes to understanding the spectrum of BM presentation.

Implications:

Further research into the pathogenesis of BM is warranted, particularly for rare presentations.

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This case highlights the importance of considering non-syndromic bilateral BM in clinical diagnosis.

Management strategies for BM may need to account for bilateral presentations.