TY - JOUR
T1 - Intensified photodynamic therapy of actinic keratoses with fractional CO2 laser
T2 - a randomized clinical trial
AU - Togsverd-Bo, K
AU - Haak, C S
AU - Thaysen-Petersen, D
AU - Wulf, H C
AU - Anderson, R R
AU - Hædersdal, M
N1 - © 2012 The Authors. BJD © 2012 British Association of Dermatologists.
PY - 2012/6
Y1 - 2012/6
N2 - Background: Photodynamic therapy (PDT) with methyl aminolaevulinate (MAL) is effective for thin actinic keratoses (AKs) in field-cancerized skin. Ablative fractional laser resurfacing (AFXL) creates vertical channels that facilitate MAL uptake and may improve PDT efficacy. Objectives: To evaluate efficacy and safety of AFXL-assisted PDT (AFXL-PDT) compared with conventional PDT in field-directed treatment of AK. Methods Fifteen patients with a total of 212 AKs (severity grade I-III) in field-cancerized skin of the face and scalp were randomized to one treatment with PDT and one treatment with AFXL-PDT in two symmetrical areas. Following curettage of both treatment areas, AFXL was applied to one area using 10 mJ per pulse, 0·12 mm spot, 5% density, single pulse (UltraPulse®, DeepFx handpiece; Lumenis Inc., Santa Clara, CA, U.S.A.). MAL cream was then applied under occlusion for 3 h and illuminated with red light-emitting diode light at 37 J cm -2. Fluorescence photography quantified protoporphyrin IX (PpIX) before and after illumination. Results: At 3-month follow-up, AFXL-PDT was significantly more effective than PDT for all AK grades. Complete lesion response of grade II-III AK was 88% after AFXL-PDT compared with 59% after PDT (P = 0·02). In grade I AK, 100% of lesions cleared after AFXL-PDT compared with 80% after PDT (P = 0·04). AFXL-PDT-treated skin responded with significantly fewer new AK lesions (AFXL-PDT n = 3, PDT n = 11; P = 0·04) and more improved photoageing (moderate vs. minor improvement, P = 0·007) than PDT-treated skin. Pain scores during illumination (6·5 vs. 5·4; P = 0·02), erythema and crusting were more intense, and long-term pigmentary changes more frequent from AFXL-PDT than PDT (P = not significant). PpIX fluorescence was higher in AFXL-pretreated skin [7528 vs. 12 816 arbitrary units (AU); P = 0·003] and photobleached to equal intensities after illumination (AFXL-PDT 595 AU, PDT 454 AU; P = 0·59). Conclusions: AFXL-PDT is more effective than conventional PDT for treatment of AK in field-cancerized skin.
AB - Background: Photodynamic therapy (PDT) with methyl aminolaevulinate (MAL) is effective for thin actinic keratoses (AKs) in field-cancerized skin. Ablative fractional laser resurfacing (AFXL) creates vertical channels that facilitate MAL uptake and may improve PDT efficacy. Objectives: To evaluate efficacy and safety of AFXL-assisted PDT (AFXL-PDT) compared with conventional PDT in field-directed treatment of AK. Methods Fifteen patients with a total of 212 AKs (severity grade I-III) in field-cancerized skin of the face and scalp were randomized to one treatment with PDT and one treatment with AFXL-PDT in two symmetrical areas. Following curettage of both treatment areas, AFXL was applied to one area using 10 mJ per pulse, 0·12 mm spot, 5% density, single pulse (UltraPulse®, DeepFx handpiece; Lumenis Inc., Santa Clara, CA, U.S.A.). MAL cream was then applied under occlusion for 3 h and illuminated with red light-emitting diode light at 37 J cm -2. Fluorescence photography quantified protoporphyrin IX (PpIX) before and after illumination. Results: At 3-month follow-up, AFXL-PDT was significantly more effective than PDT for all AK grades. Complete lesion response of grade II-III AK was 88% after AFXL-PDT compared with 59% after PDT (P = 0·02). In grade I AK, 100% of lesions cleared after AFXL-PDT compared with 80% after PDT (P = 0·04). AFXL-PDT-treated skin responded with significantly fewer new AK lesions (AFXL-PDT n = 3, PDT n = 11; P = 0·04) and more improved photoageing (moderate vs. minor improvement, P = 0·007) than PDT-treated skin. Pain scores during illumination (6·5 vs. 5·4; P = 0·02), erythema and crusting were more intense, and long-term pigmentary changes more frequent from AFXL-PDT than PDT (P = not significant). PpIX fluorescence was higher in AFXL-pretreated skin [7528 vs. 12 816 arbitrary units (AU); P = 0·003] and photobleached to equal intensities after illumination (AFXL-PDT 595 AU, PDT 454 AU; P = 0·59). Conclusions: AFXL-PDT is more effective than conventional PDT for treatment of AK in field-cancerized skin.
U2 - 10.1111/j.1365-2133.2012.10893.x
DO - 10.1111/j.1365-2133.2012.10893.x
M3 - Journal article
C2 - 22348388
SN - 0007-0963
VL - 166
SP - 1262
EP - 1269
JO - British Journal of Dermatology
JF - British Journal of Dermatology
IS - 6
ER -
