[Treatment of vascular malformations and pigment disorders of the face and neck by pulsed dye laser, Photoderm VL and Q-switched ruby laser]

Effective treatment of rosacea using intense pulsed light systems

BACKGROUND

To date, a variety of lasers have been used for treating vascular skin lesions. Intense pulsed light (IPL) is a proven technology for vascular lesion management, such as rosacea.

OBJECTIVES

The aim of this study was to test the effectiveness of IPL in treating vascular facial lesions in rosacea patients.

METHODS

Sixty patients presenting with telangiectasia owing to facial rosacea were selected randomly from the patient population in the Department of Laser Therapy at the Medical Centre Maastricht, the Netherlands. Patients of various skin types (Fitzpatrick I-IV) were selected with an average age of 44.2 years. Five hundred eight sites were treated, with a mean of 4.1 treatments per site and an IPL spectrum ranging from 515 to 1,200 nm with different pulse durations between 4.3 and 6.5 milliseconds. The energy density varied from 25 to 35 J/cm2.

RESULTS

Patients were assessed clinically and photographically. A mean clearance of 77.8% was achieved and was maintained for a follow-up period averaging 51.6 months (range 12-99 months). No correlation was found between the clearance of rosacea and patient-related or technical data. For approximately 3 years post-treatment, lesion recurrence was noted in 4 of the 508 treated facial sites.

DISCUSSION

This study demonstrated that IPL treatment of facial rosacea is effective in obtaining clearance of 77.8%, with minimal side effects, and that treatment effects are maintained.

CONCLUSION

The IPL system, with its broad range of technical variables, is an effective tool in achieving meaningful and lasting rosacea clearance.

Intense pulsed light for hairy grafts and flaps

BACKGROUND

Intense pulsed light (IPL) is an effective and safe method of hair removal.

OBJECTIVE

To evaluate the clinical response of hairy grafts and flaps of different anatomic areas to an IPL source.

METHODS

Four patients (three men, one woman; 17-72 years old) with hairy skin grafts (n = 2) or flaps (n = 2) were included. Donor skin areas included the forehead (n = 1), supraclavicular (n = 1), abdomen (n = 1), and groin (n = 1). Excisional surgery was performed because of basal cell carcinoma (BCC) of the nasal wall (n = 1), squamous cell carcinoma (SCC) of the forehead (n = 1), congenital nevus of the malar region (n = 1), and breast carcinoma (n = 1). The treatment was IPL with the following parameters: wavelength 695-755 nm, pulse width 3.8-4.5 msec, delay 20-30 msec, spot size 10 mm x 45 mm, fluence 38-42 J/cm2, and an interval of 4 weeks. A total of one to six treatment sessions were administered.

RESULTS

A progressive decrease in terminal hair and delayed hair growth rate (more than 8 months) were observed in all the patients. Improvement of skin coarseness, pigmentation, and erythema was also observed in the graft and its periphery in one patient. Persistent erythema (more than 48 hours) was the only side effect, observed in one patient.

CONCLUSION

IPL is an effective method to depilate hairy grafts and flaps.

Photothermic treatment of pigmented B16 melanoma using a broadband pulsed light delivery system

Pulsed photothermic treatment (PTT) of pigmented B16 mice melanoma tumors was carried out using a Photodyne incoherent light delivery system. Tumor heating with average temperature of 41-44 degrees C was observed during broadband photoirradiation (600-800 nm) at light doses of 60-120 J/cm(2) delivered using 0.6 J/cm(2) pulses (2 ms) at 1 Hz repetition rate. Electron microscopy of tumor samples revealed pronounced structural changes in microvasculature and melanosomes. Pulsed PTT caused damage to endothelial cells and vascular walls, swelling of mitochondria and melanosomal disruption without nuclear alteration. Significant tumor response with necrosis formation followed by tumor regression was observed by a tumor growth study after PTT at 120 J/cm(2).

Treatment of a nonresponding port-wine stain with a new pulsed light source (PhotoDerm VL)

BACKGROUND AND OBJECTIVE

The pulsed dye laser is effective and safe in the treatment of port-wine stains. It is the laser of choice for port-wine stains and initial superficial hemangiomas in children. For the treatment of darker port-wine stains in adults that have not responded to pulsed dye laser treatment, excellent results can be achieved using the PhotoDerm VL, a new technology based upon the emission of wide band, noncoherent intense pulsed light.

STUDY DESIGN/PATIENT AND METHODS

Our report presents a patient with a facial port-wine stain that hardly responded to previous pulsed dye laser therapy. After the first ineffective treatment trial, the patient refused further dye laser applications. An intense pulsed light source (Photoderm VL) was applied instead.

RESULTS

The lesion responded well after the first treatment session and was completely resolved after four treatments with the PhotoDerm VL.

CONCLUSIONS

The new intense pulsed light source Photoderm VL seems to be a promising treatment alternative for the therapy of otherwise nonresponding port-wine stains due to its special technical features.

Treatment of xanthelasma palpebrarum with bichloracetic acid

BACKGROUND

Although many treatment modalities have been described for xanthelasma palpebrarum, no single technique has emerged as dominant.

OBJECTIVES

Our purpose was to review the various therapeutic modalities for xanthelasma and to assess the efficacy of topical bichloracetic acid.

METHODS

Thirteen patients with 25 xanthelasma were treated with topical 100% bichloracetic acid. Efficacy was assessed over a follow-up period of 7 months to 10.5 years (average, 64 months).

RESULTS

Eighty-five percent of patients experienced initial complete clearing, and 72% of their lesions have not required retreatment over an average period of 68 months. Recurrences responded well to repeat treatment. Eighty-three percent of recurrent or poorly responsive lesions were associated with high cholesterol. The most resistant patient had four-lid involvement. Excellent cosmetic results and high patient satisfaction were seen.

CONCLUSIONS

Topical bichloracetic acid is a viable alternative to other modalities in the management of xanthelasma. Advantages include simplicity, cost-effectiveness, speed, safety, and efficacy.

Treatment of essential telangiectasias with an intense pulsed light source (PhotoDerm VL)

BACKGROUND

The flashlamp-pumped pulsed dye laser (585 and 577 nm) has proven to be a very effective and safe treatment option in the therapy of essential telangiectasias (ETE). Nevertheless, the postoperative intracutaneous hematomata, which most patients see as cosmetically disfiguring, always has been a matter of concern.

OBJECTIVE

To test the efficacy and safety of a new, large spot size, intense pulsed light source, the PhotoDerm VL, which omits noncoherent light adjustable within the 515-1200-nm range, in the treatment of ETE.

METHODS

Fourteen patients were treated with the PhotoDerm VL. They suffered from ETE of the face, postoperative teleangiectasis of the nose, ETE of both legs, and poikiloderma of Civatte.

RESULTS

All treated lesions could be abrogated with excellent results by this new device. There were no unpleasant side effects of the treatment. Additionally, due to the large spot size (2.8 cm2), a larger area could be treated within one session. No anesthesia was required.

CONCLUSION

The PhotoDerm VL is an innovative, highly effective, and comparably safe therapeutic alternative to the laser in the treatment of ETE. The rate of cosmetically relevant side effects is considerably smaller, the patient compliance is excellent, and the method can be applied easily in an outpatient setting.