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Mongolian spots--a prospective study.

Divya Gupta1, Devinder M Thappa

  • 1Department of Dermatology and Sexually Transmitted Diseases, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India.

Pediatric Dermatology
|July 10, 2013
PubMed
Summary
This summary is machine-generated.

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Mongolian spots (MS) are common in newborns, with over 65% affected. While many MS fade by one year, larger, darker, or extrasacral spots may persist.

Area of Science:

  • Dermatology
  • Pediatrics
  • Neonatology

Background:

  • Mongolian spots (MS) are benign congenital hyperpigmentations commonly found in infants.
  • Understanding the prevalence, clinical characteristics, and natural evolution of MS is crucial for accurate diagnosis and parental counseling.

Purpose of the Study:

  • To determine the frequency and clinical presentation of Mongolian spots (MS) in a newborn population.
  • To assess the age-related evolution and resolution patterns of Mongolian spots.

Main Methods:

  • A prospective, three-phase study involving 2,313 newborns.
  • Phase 1: Initial examination of MS characteristics (number, size, shape, color, distribution).
  • Phases 2 & 3: Follow-up at 6 months and 1 year to track MS evolution and resolution.

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Main Results:

  • Mongolian spots (MS) were observed in 65.9% of newborns.
  • The majority of MS were single, sacral, <5cm, irregular, and blue-green.
  • Significant predictors of MS persistence beyond one year included multiple lesions, extrasacral location, size >10cm, and dark color.

Conclusions:

  • Mongolian spots are highly prevalent in newborns, with most resolving by age one.
  • Specific clinical features (multiple, extrasacral, large, dark) are associated with delayed resolution.
  • This study provides valuable data on MS natural history, aiding clinical assessment.