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Research Letter
Oct 2012

Dermoscopic Rainbow Pattern in Kaposi's Sarcoma Lesions: Our Experience

Author Affiliations

Author Affiliations: Department of Dermatology, University of Sassari, Sassari, Italy.

Arch Dermatol. 2012;148(10):1207-1208. doi:10.1001/archdermatol.2012.2204

Cheng et al1 were the first to define the multicolored areas in some Kaposi's sarcoma (KS) lesions observed under polarized-light dermoscopy as rainbow pattern and to describe this dermoscopic feature as specific but not sensitive for the diagnosis of KS. Their observation prompted several interesting discussions in the dermoscopic literature.2-4 In our clinical practice, we have observed a high number of classic KS (CKS) cases.5 Dermoscopic examination of all the KS lesions in a group of patients with CKS was performed to evaluate the sensitivity of the rainbow pattern feature observed in the different clinical types of KS lesions.