The coexistence of linear and giant porokeratosis associated with Bowen's disease

Linear and giant porokeratosis are both rare variants of this disorder of keratinization. We present a case exhibiting the clinical features of both variants coexisting in one patient, which to our knowledge has not been described previously. Furthermore, Bowen's disease was found to be present in the giant lesion, reflecting the enhanced risk of malignant transformation of this rare subtype of porokeratosis.