Table 1: Dermoscopic features of Porokeratosis in the literaure and in the presented case.
Author | Porokeratosis type | Dermoscopic definition for cornoid lamella | Dermoscopic definitions for the central part of porokeratosis |
D' Amico, et al. [2] | PM | Not defined | Hypopigmented scar-like area, multiple scattered brown globules and dots |
Pizzichetta, et al. [3] | PM | Peripheral whitish rim | Diffuse whitish-brown pigmentation with brown globules and/or dots |
Zaballos, et al. [4] |
DSAP |
Double white track |
Red dots, globules and dots White homogeneous area |
Panasiti V, et al. [5] | DSAP | Brownish outline | Scar-like area with few globular red structures |
Delfino, et al. [6] | DSAP | Annular whitish-yellowish structure | Flat pink-white scar-like area |
The presented patient |
Linear porokeratosis |
Whitish-yellow thread-like structure in early lesions. Whitish-yellow track in mature ones |
Early lesions: Gray-brown network-like appearance Mature lesions: Reddish vascular network together with irregular dotted vessels Oldest lesions: Reddish vascular network together with irregular dotted vessels accompanied by pinkish-white scar like areas |
PM: Porokeratosis Mibelli; DSAP: Disseminated superficial actinic porokeratosis.