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Dermatology. 2010;220(2):103-9. doi: 10.1159/000265556. Epub 2009 Dec 9.

Studying regression of seborrheic keratosis in lichenoid keratosis with sequential dermoscopy imaging.

Author information

1
Department of Dermatology, Hospital de Sant Pau i Santa Tecla, Tarragona, Spain. pzaballos@aedv.es

Abstract

BACKGROUND:

Lichenoid keratosis (LK) is a well-described entity that has been proposed to represent a regressive response to a pre-existent epidermal lesion.

AIMS:

To evaluate the natural evolution of a series of cases showing the intermediate stage of the regression of seborrheic keratosis in LK using sequential dermoscopy imaging over time.

MATERIAL AND METHODS:

A series of lesions with dermoscopic areas of seborrheic keratosis and LK in the same tumor were consecutively collected for over 3 years at the Dermatology Department of the Hospital de Sant Pau i Santa Tecla, Tarragona, Spain. Sequential dermoscopic images of each case were collected quarterly for 1 year. At the end of the follow-up, all the lesions were biopsied.

RESULTS:

A total of 22 cases were collected. At the end of the follow-up, the LK part increased in all the lesions. In 11 cases (50%), the seborrheic keratosis part disappeared completely, and in another 5 cases (22.7%), seborrheic keratosis comprised only 10% of the remaining area.

CONCLUSIONS:

These dermoscopic study findings support the proposal that LK represents a regressive response to a pre-existent epidermal lesion, in this case seborrheic keratosis.

PMID:
19996577
DOI:
10.1159/000265556
[Indexed for MEDLINE]
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