Blue Nevus


Blue Nevus, Cellular Blue Nevus

  • Epidemiology
  1. Typical onset in children
  • Pathophysiology
  1. Dermal Nevus whose brown pigment reflects blue light and absorbs other light wavelengths
  • Signs
  1. Round, regular, slightly elevated blue appearing nevus with size <5mm
  2. Distribution
    1. Extremities
    2. Dorsal hands
  • Signs
  • Cellular Blue Nevus (variant)
  1. Uncommon variant that is 1 cm and typically located on the buttock
  • Management
  1. Transformation into Melanoma is rare but can occur
  2. Lesions are dark and may be difficult to distinguish from Melanoma
  3. Biopsy suspicious lesions
  • Reference
  1. Habif (2003) Clinical Dermatology, 4th ed.. Mosby, p. 773-813