Eruptive Disseminated Porokeratosis Associated With Internal Malignancies: A Case Report

Porokeratosis is a chronic skin disorder characterized by the presence of patches with elevated, thick, keratotic borders histologically featuring cornoid lamella. While porokeratosis usually is clinically defined by a slow onset, an eruptive variant has been reported. We report a 77-year-old woman affected by pancreatic carcinoma with eruptive disseminated porokeratosis (EDP). We reviewed published cases of EDP developing suddenly or within a few months and found a total of 16 patients, 6 with internal malignancies of the liver or gastrointestinal tract. These findings suggest that patients with EDP should be investigated for the presence of internal malignancies.