Dermoscopy of a solitary storiform collagenoma

Abstract

The dermoscopic features of solitary storiform collagenomas (sclerotic fibromas) have not been previously described, as these are rare cutaneous soft tissue tumors. The presence of multiple lesions is considered a marker of Cowden’s disease. They can also present as single firm cutaneous nodules. We present an unusual single nodule with distinct dermoscopic and histologic features.

Keywords

• collagenoma
• storiform collagenoma
• sclerotic fibroma
• Cowden syndrome