![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhw4by1zJb_uxE_ByspvdJDkU0ouDD90_WT85N2eRt0sDV2bS4fF2JdwhQPa0Je7gOQSBZD07k_QQF1dfMoX84u1UQ-opzDNJnUHTWxslEdZIIqfIeIoN0qtmGu6S_KdUzQdhTjDUVocWw/s400/laurent+f.jpg)
A 53-year-old woman consulted for this pigmented lesion on her back.
Dermoscopy revealed brown structures typical of
fat fingers, in favor of a
seborrheic keratosis.
Fat fingers are an important dermoscopic sign to know for diagnosing seborrheic keratosis in absence of other typical signs (milia-like kysts, comedo-like structures, fingerprint-like structures, sharp margins, hairpin blood vessels) Kopf and al, "Fat fingers", a clue in the dermoscopic diagnosis of seborrheic keratoses J Am Acad Dermatol2006;55:1089-91