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[Hamartoma oligemicus].

S Fays1, F Truchetet, J F Cuny

  • 1Service de Dermatologie, Hôpital Beauregard, 21, rue des Frères, 57126 Thionville.

Annales De Dermatologie Et De Venereologie
|March 23, 2002
PubMed
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Naevus oligemicus, a rare condition, involves selective vasoconstriction of deeper skin vessels. This case report details a 45-year-old man with cool, discolored lesions, highlighting the mystery of this vascular anomaly.

Area of Science:

  • Dermatology
  • Vascular Biology
  • Rare Diseases

Background:

  • Naevus oligemicus is a rare condition characterized by selective vasoconstriction of deeper skin vessels.
  • It affects thermal skin blood flow while sparing superficial nutrient blood flow.

Observation:

  • A 45-year-old man presented with erythematocyanotic lesions and coolness on the abdomen and thighs, noted 3 years prior.
  • Physical examination and laboratory tests were normal; histology showed non-specific dermatitis.
  • Skin surface thermometry revealed involved areas were up to 2°C cooler than surrounding skin.

Findings:

  • The case presents a distinct instance of naevus oligemicus, a pharmacological naevus.
  • No histological vascular abnormalities were identified, suggesting a functional rather than structural issue.

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  • The precise cause of selective deeper vessel vasoconstriction remains unknown.

    • Implications:

    • Potential mechanisms include increased sympathetic vasoconstrictor tone or heightened sensitivity to catecholamines in deeper vessels.
    • Further research is needed to elucidate the pathophysiology of naevus oligemicus.
    • Understanding this condition may offer insights into thermoregulatory vascular control.