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Related Concept Videos

Changes in Skin Color: Clinical Perspectives01:14

Changes in Skin Color: Clinical Perspectives

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...
Skin Cancer01:30

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.
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...
Pigmentation01:19

Pigmentation

The color of the skin is influenced by a number of pigments, including melanin, carotene, and hemoglobin. Recall that melanin is produced by cells called melanocytes, which are found scattered throughout the stratum basale of the epidermis. The melanin is transferred to the keratinocytes via melanosomes.
Melanin occurs in two primary forms: eumelanin that provides black and brown pigment and pheomelanin that provides red color. Dark-skinned individuals produce more melanin than those with pale...

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Related Experiment Video

Updated: May 10, 2026

Using a 1064-nm Picosecond Neodymium-Doped Yttrium Aluminum Garnet Laser for Periorbital Hyperpigmentation
04:43

Using a 1064-nm Picosecond Neodymium-Doped Yttrium Aluminum Garnet Laser for Periorbital Hyperpigmentation

Published on: May 23, 2025

Oral hyperpigmented lesions--a case study.

Siew Kim Kwa1, Esha Das Gupta

  • 1Department of Family Medicine, International Medical University, Seremban, Negri Sembilan, Malaysia. kwaskim2@yahoo.co.uk

Australian Family Physician
|July 5, 2013
PubMed
Summary

A 58-year-old woman with hypertension, diabetes, and dyslipidemia presented with hyperpigmented macules. These lesions, present since her 40s, along with a family history of gastrointestinal cancers, suggest a potential genetic predisposition.

Area of Science:

  • Gastroenterology
  • Dermatology
  • Genetics

Background:

  • The patient is a 58-year-old overweight female with a history of hypertension, diabetes, and dyslipidemia.
  • She presented for routine follow-up of her chronic conditions.

Observation:

  • The patient exhibited hyperpigmented brown macules on the inner surface of her lower lip and buccal mucosa.
  • These oral lesions were first noticed in her 40s.

Findings:

  • The patient's mother died at 58 from metastatic gastric cancer.
  • Her brother died at 45 from colon cancer with liver and lung metastases.
  • The combination of oral pigmentation and a strong family history of gastrointestinal cancers raises suspicion for a hereditary cancer syndrome.

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Quantification of Hypopigmentation Activity In Vitro
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Quantification of Hypopigmentation Activity In Vitro

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Published on: May 23, 2025

Anterior High-Resolution Optical Coherence Tomography in the Diagnosis and Therapeutic Monitoring of Ocular Surface Squamous Neoplasia
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Quantification of Hypopigmentation Activity In Vitro
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Quantification of Hypopigmentation Activity In Vitro

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Implications:

  • Early recognition of oral signs like Peutz-Jeghers Syndrome (PJS) related pigmentation is crucial.
  • Genetic counseling and screening for gastrointestinal cancers are recommended for individuals with such findings and family history.
  • This case highlights the importance of a thorough family history and physical examination for identifying potential hereditary cancer syndromes.