Dermoscopy–pathology relationship in seborrheic keratosis

Making a definitive diagnosis of seborrheic keratosis (SK) can be challenging for the naked eye due to its wide variation in clinical features. Fortunately, however, most cases of SK exhibit the typical dermoscopic findings of fissures and ridges, hairpin vessels with white halo, comedo‐like openings, and milia‐like cysts, all of which are helpful to distinguish SK from melanoma, melanocytic nevus, squamous cell carcinoma, basal cell carcinoma (BCC) and other skin tumors. Histopathologically, these dermoscopic characteristics correspond to papillomatous surface of the epidermis, enlarged capillaries of the dermal papillae, pseudohorn cysts in the epidermis opened to the surface of the lesion and intraepidermal cysts, respectively. Clinicians should bear in mind that the clonal type of SK dermoscopically mimics melanoma and BCC by the presence of globule‐like structures, while regressing SK exhibits a granular pattern that is similar to the peppering found in melanoma. Furthermore, milia‐like cysts alone are insufficient for a conclusive diagnosis of SK because melanoma in rare cases displays cysts along with other SK‐like dermoscopic findings.

• Publication year

  2017

• Venue

  Journal of dermatology (Print)

• Publication date

  2017-05-01

• Fields of study

  Medicine

• Identifiers
  DOI 10.1111/1346-8138.13657PMID 28447350
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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