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Rapid wound re-epithelialization and basal cell carcinoma clearance after Mohs micrographic surgery with postoperative photodynamic therapy

Rapid wound re-epithelialization and basal cell carcinoma clearance after Mohs micrographic surgery with postoperative photodynamic therapy

Journal of Drugs in Dermatology 9(2): 143-148

Methyl aminolevulinic acid photodynamic therapy (MAL-PDT) has antitumor activity and may promote wound healing Superficial and nodular basal cell carcinomas (BCCs) have been successfully treated with MAL-PDT in prior reports. In vitro and animal studies have shown more rapid re-epithelialization and decreased myofibroblast response after treatment thus suggesting that PDT may play a possible role in promotion of wound healing. To describe a novel case of a large multifocal BCC treated with postoperative PDT that showed results of tumor clearance and rapid re-epithelialization and to review the relevant literature. A patient presented for Mohs micrographic surgery (MMS) after recent biopsy revealed recurrent BCC. Mohs micrographic surgery was performed, where after six stages were taken, approximately 50% of the peripheral margins of the tumor remained positive for superficial BCC. Given the large size of the wound defect (12.5 cm x 9 cm) and superficial nature of the persistent tumor, the authors opted to treat the patient with adjuvant MAL-PDT in lieu of pursuing additional stages with MMS. The patient returned the following day for adjuvant therapy with MAL-PDT. Two consecutive treatments one week apart were given as an adjunctive treatment course for persistent BCC. At follow-up four weeks after the PDT treatment, the defect had fully re-epithelialized. In the authors' clinical practice, an untreated wound of this size typically heals in 10-12 weeks. The patient has been seen in six months of follow-up to date. Review of the literature relevant to use of MAL-PDT in treatment of basal cell carcinoma and literature describing effects of PDT on wound healing was performed. MAL-PDT may be an effective adjuvant tool against large multifocal BCCs for which surgery has not resulted in clearance. Treatment with PDT resulted in rapid re-epithelialization of the surgical wound in this case. This observation is supported by prior in vitro studies and in vivo animal experiments demonstrating more rapid re-epithelialization of wounds and decreased scarring response after PDT.

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Accession: 055368206

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PMID: 20214177

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