Korean J Dermatol.
2000 Mar;38(3):399-403.
A Case of Squamous Cell Carcinoma Arising in the Lesion of Chronic Discoid
Lupus Erythematosus
Abstract
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Squamous cell carcinoma(SCC) is a recognized late complication of chronic discoid lupus
erythematosus(CDLE). There are many case reports of SCC in white patients with chronic DLE.
However, it is uncommon in blacks and Asians. The etiology of squamous cell carcinoma is
multifactorial. The predisposing factors for the development of SCC in these patients
include actinic keratosis, Bowen's disease, burn scars, arsenic keratosis, and chronic
discoid lupus erythematosus. Of these causes, SCC developing in the lesions of CDLE is
very rare. We report a patient who has been evaluated for ten years with a diagnosis of
discoid lupus erythematosus and has squamous cell carcinoma.