Keratoacanthoma Growth phases | Dermatology Education Keratoacanthoma Growth phases Video
May 25, 2020

Dermnet Videos

Benign tumors Videos

  • Chondrodermatitis Nodularis Helicis
  • Dermatofibroma
  • Epidermal Cyst
  • Hypertrophic Scars and keloids
  • Keratoacanthoma
  • Nevus Sebaceus
  • Pilar Cyst
  • Sebaceous Hyperplasia
  • Seborrheic Keratosis
  • Skin Tags
  • Syringoma
  • Keratoacanthoma Growth phases

    Three growth phases are described:

    1. Proliferative phase: a solitary papule appears suddenly and then rapidly grows to its maximum size over 2 to 4 weeks.

    2. Mature phase: the lesion is stable in size and appearance for weeks to months; it may appear crateriform if the core has been partially removed.

    3. Resolving phase: the base becomes indurated, the central core is expelled, and the base resorbs, leaving a pitted scar. This phase may last several months.