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Linear atrophoderma of Moulin: an underrecognized entity.

Omid Zahedi Niaki1, Wendy Sissons2, Van-Hung Nguyen3

  • 1Division of Dermatology, Department of Pediatrics, Montreal Children's Hospital, McGill University Health Centre, 1001 Boulevard Décarie, Montreal, QC, H4A 3J1, Canada. Omid.zahediniaki@mail.mcgill.ca.

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Summary

Linear atrophoderma of Moulin (LAM) is a rare skin condition presenting as linear lesions. Recognizing LAM is crucial for proper diagnosis and management, distinguishing it from similar conditions like linear scleroderma.

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Area of Science:

  • Dermatology
  • Genetics

Background:

  • Linear atrophoderma of Moulin (LAM) is an acquired skin condition.
  • It typically appears in childhood and adolescence, presenting as linear, hyperpigmented, and atrophic lesions.
  • LAM is thought to be a form of cutaneous mosaicism.

Observation:

  • A case of a young, healthy patient with LAM lesions on extremities over 5 years is presented.
  • Initial diagnosis considered linear scleroderma.
  • Histological examination revealed no significant inflammatory changes, supporting LAM diagnosis.

Findings:

  • LAM lesions can mimic atrophoderma of Pasini and Pierini (APP) and linear scleroderma.
  • Histology is key in differentiating LAM from inflammatory conditions.
  • LAM generally follows a benign course with no established effective treatments.

Implications:

  • Accurate diagnosis of LAM is essential due to differences in prognosis and management compared to linear scleroderma.
  • Increased recognition of LAM is needed as it is potentially underreported.
  • This case underscores the importance of distinguishing LAM in clinical practice.