title: Repeated 5-aminolevulinic acid-based photodynamic therapy following electro-curettage for pigmented basal cell carcinoma.
abstract: 5-Aminolevulinic acid-based photodynamic therapy (ALA-PDT) in the standard manner is ineffective for pigmented basal cell carcinoma (pBCC), because melanin absorbs the photoactivating light interred for protoporphyrin IX. The objective of this study was to assess the therapeutic outcome of pBCCs with repeated ALA-PDT following removal of pigmentation with electro-curettage. After electro-curettage, 16 pBCCs were treated with a combination of topical application of 20% ALA in O/W emulsion and topical instillation of 10% ALA solution, followed by photoactivating light. ALA-PDT was performed more than three times. Fourteen of 16 pBCCs showed CR. Two pBCCs showing PR or NR were excised. Repeated ALA-PDT following electro-curettage was effective for pBCC.
authors.affiliation: Department of Dermatology, National Defense Medical College, Tokorozawa, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Itoh
authors.forename: T
authors.initials: T
authors.lastname: Henta
authors.forename: Y
authors.initials: Y
authors.lastname: Ninomiya
authors.forename: S
authors.initials: S
authors.lastname: Tajima
authors.forename: A
authors.initials: A
authors.lastname: Ishibashi
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000622:Aminolevulinic Acid / Q000627:therapeutic use*; D002280:Basal Cell Carcinoma / Q000188:drug therapy* / Q000601:surgery; D003475:Curettage; D005260:Female; D006801:Humans; D008027:Light; D008297:Male; D008875:Middle Aged; D010778:Photochemotherapy; D017319:Photosensitizing Agents / Q000627:therapeutic use*; D012878:Skin Neoplasms / Q000188:drug therapy* / Q000601:surgery; D016896:Treatment Outcome
chemical_list: D017319:Photosensitizing Agents; D000622:Aminolevulinic Acid