Freeman M, Vinciullo C, Francis D, Spelman L, Nguyen R, Fergin P, et al. A comparison of photodynamic therapy using topical methyl aminolevulinate (Metvix) with single cycle cryotherapy in patients with actinic keratosis: a prospective, randomized study. J Dermatolog Treat 2003 Jun;14(2):99-106 Abstract available at http://www.ncbi.nlm.nih.gov/pubmed/12775317.
Compare quality appraisals for each clinical question
- 10.2 Photodynamic therapy
- 9.2 Cryotherapy and electrodessication and curettage for cutaneous squamous cell carcinoma