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[Multiple congenital smooth-muscle hamartomas]

B Guillot1, P Huet, J M Joujoux

  • 1Service de Dermatologie, Hôpital Caremeau, CHU de Nîmes.

Annales De Dermatologie Et De Venereologie
|September 25, 1998
PubMed
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Congenital smooth muscle hamartoma, a rare condition, can present as multiple, partially regressive plaques in infants. This case highlights a unique presentation of this uncommon skin lesion.

Area of Science:

  • Dermatology
  • Pediatric Pathology
  • Medical Genetics

Background:

  • Smooth muscle hamartoma is a rare congenital skin anomaly.
  • Typically presents as a solitary plaque with hypertrichosis at birth.
  • Multiple plaque presentations are exceptionally uncommon.

Observation:

  • A 5-day-old infant presented with multiple, minimally infiltrative plaques.
  • Lesions were noted on the buttocks, left lower extremity, shoulder, and right ankle.
  • Affected areas were covered with long, dark hair.

Findings:

  • Histological examination revealed hyperplastic smooth muscle bundles with varied orientations.
  • Diagnosis confirmed as congenital smooth muscle hamartoma.
  • The infant had no other significant clinical abnormalities.

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Implications:

  • This case expands the known spectrum of congenital smooth muscle hamartoma presentations.
  • Highlights the possibility of multiple, partially regressive lesions.
  • Emphasizes the importance of thorough examination for rare dermatological conditions in neonates.