The best results in treatment of capillary nevus have been achieved by:
**Core Concept**
The treatment of capillary nevi, also known as port-wine stains, involves the use of laser therapy to reduce their appearance. The ideal laser treatment depends on the age of the patient, the color and thickness of the nevi, and the desired outcome.
**Why the Correct Answer is Right**
Pulsed dye lasers are the most effective treatment for capillary nevi, particularly in children and adolescents. This is because these lasers emit a wavelength of light that is selectively absorbed by the oxyhemoglobin in the nevi, causing the blood vessels to constrict and reducing the appearance of the nevi. The pulse duration of the laser is critical, as it must be long enough to allow for sufficient heat buildup in the blood vessels while minimizing damage to the surrounding skin.
**Why Each Wrong Option is Incorrect**
**Option A:** Other types of lasers, such as KTP lasers or Nd:YAG lasers, may be used to treat capillary nevi, but they are not as effective as pulsed dye lasers in reducing their appearance.
**Option B:** Topical treatments, such as creams or ointments, are not effective in treating capillary nevi and may even cause irritation or allergic reactions.
**Option C:** Surgical excision or removal of capillary nevi is not typically performed, as it can lead to scarring and may not result in a significant improvement in appearance.
**Clinical Pearl / High-Yield Fact**
It's essential to note that the treatment of capillary nevi is most effective when initiated in early childhood, as the nevi tend to become more resistant to treatment as the child grows older.
**Correct Answer: C. Pulsed dye lasers. Pulsed dye lasers.**