+ General Considerations

  • Benign tumors arising from hair matrix cells and particularly pilar matrix cells
  • Mean age 8.2 years
  • Breed predisposition: Kerry Blue Terrier and Miniature Poodle
  • Sites: shoulder and lumbrosacral region
  • Slow growing, well-encapsulated, and often mineralized with 33% cystic and 33% hyperpigmented
  • Malignant pilomatricoma is rare (2 cases reported) with metastasis to neurologic structures
  • Treatment: surgery
  • Prognosis: excellent