Dermoscopy of a solitary storiform collagenoma

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