Dermoscopy of pagetoid reticulosis, with dermoscopic-pathologic correlation.

Pagetoid reticulosis (PR), also known as Woringer-Kolopp disease, is a rare variant of mycosis fungoides with distinctive clinicopathologic features. It clinically manifests as a solitary, erythematous, gradually enlarging, scaly, or verrucous plaque on the lower extremities, and due to its indolent course and nonspecific clinical features, may remain undiagnosed for years. In the current study, we describe the clinical and dermoscopic characteristics of a rare case of PR disease and correlate them with the corresponding histopathologic findings. Dermoscopy may prove beneficial in early diagnosis of this rare entity.