Fig 1: clinical view of a seborrheic keratosis
Fig 2: Dermoscopic image taken with polarized dermoscopy
Fig 3: Dermoscopic image of the same seborrheic keratosis taken
with non polarized dermoscopy (immersion contact dermoscopy)
In an article published in the Archives of Dermatology in 2007 (1) , the authors showed that milia-like cysts and comedo-like openings were better visualized with non polarized dermoscopy (NPD), suggesting that NPD was more helpful for identification of seborrheic keratosis.
1: Benvenuto-Andrade C, Dusza SW, Agero AL, Scope A, Rajadhyaksha M, Halpern AC, Marghoob AA. Arch Dermatol. 2007 Mar; 143(3):329-38. Differences between polarized light dermoscopy and immersion contact dermoscopy for the evaluation of skin lesions.
