{Reference Type}: Case Reports
{Title}: Verrucous epidermal nevus as a manifestation of a type 2 mosaic PTEN mutation in Cowden syndrome.
{Author}: Plana-Pla A;Condal L;Jaka A;Blanco I;Castellanos E;Bielsa I;
{Journal}: Pediatr Dermatol
{Volume}: 40
{Issue}: 1
{Year}: Jan 2023
{Factor}: 1.997
{DOI}: 10.1111/pde.15116
{Abstract}: Linear Cowden nevus, also known as linear PTEN nevus, is a type of epidermal nevus, first described in 2007, which is seen in patients with PTEN hamartoma tumor syndrome. It is considered to be a type 2 form of segmental mosaicism, and we suggest that it has certain clinical features that distinguish it from epidermal nevi seen in similar conditions, such as Proteus syndrome. We present a case of linear Cowden nevus in a 4-year-old boy and review the literature.