title: Aggravation of eyelid and conjunctival malignancies following photodynamic therapy in DeSanctis-Cacchione syndrome.
abstract: A 5-year-old girl with DeSanctis-Cacchione syndrome (a severe variant of xeroderma pigmentosum) was referred for evaluation of multiple eyelid and bulbar conjunctival squamous cell carcinomas. Examination evidenced multiple vegetating lesions on the eyelid, bulbar conjunctiva, and cornea of both eyes. As the lesions were considered not to be manageable by surgical excision and would have required exenteration, photodynamic therapy was performed on the patient's left eye. Three months after photodynamic therapy, the patient presented with a dramatic increase in the extension of the tumors. Since xeroderma pigmentosum is a DNA repair disorder, the radiation involved in photodynamic therapy probably played an iatrogenic role in the evolution of the case. We believe that photodynamic therapy may be harmful to patients with DNA repair disorders.
authors.affiliation: Department of Ophthalmology, Otolaryngology, Head and Neck Surgery, the School of Medicine of Ribeirão Preto, University of São Paulo, São Paulo, Brazil.
authors.forename: Fernando
authors.initials: F
authors.lastname: Procianoy
authors.forename: Antonio A V
authors.initials: AA
authors.lastname: Cruz
authors.forename: Adriano
authors.initials: A
authors.lastname: Baccega
authors.forename: Victor
authors.initials: V
authors.lastname: Ferraz
authors.forename: Fernando
authors.initials: F
authors.lastname: Chahud
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000175:diagnosis / Q000209:etiology* / Q000601:surgery; D002675:Child, Preschool; D003230:Conjunctival Neoplasms / Q000175:diagnosis / Q000209:etiology* / Q000601:surgery; D003937:Diagnosis, Differential; D017234:Eye Evisceration; D005142:Eyelid Neoplasms / Q000175:diagnosis / Q000209:etiology* / Q000601:surgery; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D010778:Photochemotherapy / Q000009:adverse effects*; D017319:Photosensitizing Agents / Q000009:adverse effects* / Q000627:therapeutic use; D012720:Severity of Illness Index; D013577:Syndrome; D014466:Ultraviolet Rays / Q000009:adverse effects*; D014983:Xeroderma Pigmentosum / Q000175:diagnosis / Q000188:drug therapy*
chemical_list: D017319:Photosensitizing Agents